Sydney (Observatory Hill) Weather Records (ASN00066062)

Record envelope, standing records and threshold days for Sydney (Observatory Hill) (ASN00066062), Australia, with 163 years of record.

Key Facts for Sydney (Observatory Hill)

Sydney (Observatory Hill) (ASN00066062) is a weather station in Australia at -33.86 latitude and 151.21 longitude, 39 m (128 ft) above sea level.
The station reports from 1858 to 2020, 163 years of record.
1,464 records set at Sydney (Observatory Hill) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Sydney (Observatory Hill) set a daily record precipitation of 75.0 mm (3.0 in) on 27 July 2020.

About the Station

Location: Australia, -33.86 latitude, 151.21 longitude.
Elevation: 39 m (128 ft).
Period of record: 1858 to 2020, 163 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Sydney (Observatory Hill). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Sydney (Observatory Hill), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	43.4 C (110.1 F)	10.6 C (51.1 F)	n/a	n/a
Feb	42.1 C (107.8 F)	9.6 C (49.3 F)	n/a	n/a
Mar	39.8 C (103.6 F)	9.3 C (48.7 F)	n/a	n/a
Apr	35.4 C (95.7 F)	7.0 C (44.6 F)	n/a	n/a
May	30.0 C (86.0 F)	4.4 C (39.9 F)	n/a	n/a
Jun	26.9 C (80.4 F)	2.1 C (35.8 F)	n/a	n/a
Jul	26.5 C (79.7 F)	2.2 C (36.0 F)	n/a	n/a
Aug	31.3 C (88.3 F)	2.7 C (36.9 F)	n/a	n/a
Sep	34.6 C (94.3 F)	4.9 C (40.8 F)	n/a	n/a
Oct	38.2 C (100.8 F)	5.7 C (42.3 F)	n/a	n/a
Nov	41.8 C (107.2 F)	7.9 C (46.2 F)	n/a	n/a
Dec	42.2 C (108.0 F)	9.1 C (48.4 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sydney (Observatory Hill) still stand. 2016 holds the most, with 26.

Standing records at Sydney (Observatory Hill) by the year they were set
Year set	Standing records
1859	20
1860	13
1861	16
1862	23
1863	6
1864	17
1865	18
1866	10
1867	6
1868	11
1869	8
1870	12
1871	13
1872	14
1873	12
1874	10
1875	13
1876	11
1877	4
1878	7
1879	7
1880	9
1881	10
1882	6
1883	5
1884	6
1885	10
1886	9
1887	15
1888	11
1889	9
1890	7
1891	5
1892	5
1893	10
1894	4
1895	8
1896	11
1897	9
1898	8
1899	9
1900	5
1901	7
1902	5
1903	10
1904	11
1905	7
1906	10
1907	7
1908	16
1909	13
1910	6
1911	6
1912	7
1913	6
1914	3
1915	16
1916	1
1917	9
1918	6
1919	10
1920	12
1921	7
1922	9
1923	10
1924	9
1925	10
1926	16
1927	14
1928	9
1929	9
1930	5
1931	17
1932	9
1933	19
1934	11
1935	11
1936	11
1937	5
1938	9
1939	4
1940	11
1941	6
1942	15
1943	8
1944	11
1945	6
1946	18
1947	7
1948	11
1949	17
1950	1
1951	1
1952	1
1953	11
1954	5
1955	6
1956	3
1957	12
1958	11
1959	5
1960	11
1961	7
1962	9
1963	5
1964	4
1965	13
1966	8
1967	6
1968	5
1969	4
1970	10
1971	4
1972	5
1973	11
1974	6
1975	8
1976	8
1977	3
1978	6
1979	11
1980	14
1981	7
1982	8
1983	7
1984	5
1985	2
1986	13
1987	6
1988	13
1989	1
1990	8
1991	12
1993	5
1994	9
1995	14
1996	8
1997	6
1998	10
1999	6
2000	6
2001	6
2002	3
2003	8
2004	13
2005	3
2006	10
2007	12
2008	9
2009	9
2010	11
2011	11
2012	7
2013	13
2014	11
2015	8
2016	26
2017	18
2018	19
2019	10
2020	3

All-Time Record Progression

7 new records

7 all-time records were set at Sydney (Observatory Hill) between 13 January 1896 and 7 January 2018. Each dot is a new record.

When Sydney (Observatory Hill) set new all-time records
Date	Kind	Detail
1896-01-13	Record high maximum temperature	Record high maximum temperature 42.5 C (108.5 F)
1932-06-22	Record low minimum temperature	Record low minimum temperature 2.1 C (35.8 F)
1942-03-28	Record daily precipitation	Record daily precipitation 280.7 mm (11.1 in)
1973-02-06	Record high minimum temperature	Record high minimum temperature 26.6 C (79.9 F)
1986-08-06	Record daily precipitation	Record daily precipitation 327.6 mm (12.9 in)
2011-02-06	Record high minimum temperature	Record high minimum temperature 27.6 C (81.7 F)
2018-01-07	Record high maximum temperature	Record high maximum temperature 43.4 C (110.1 F)

Wettest Day of Each Month

Aug: 327.6 mm (12.9 in)

The wettest day on record for each calendar month at Sydney (Observatory Hill). The most was 327.6 mm (12.9 in) on 6 August 1986.

Record daily precipitation for each month at Sydney (Observatory Hill)
Month	Record daily precipitation (mm)	Date
Jan	191.0 mm (7.5 in)	17 January 1988
Feb	243.6 mm (9.6 in)	3 February 1990
Mar	280.7 mm (11.1 in)	28 March 1942
Apr	191.0 mm (7.5 in)	29 April 1860
May	212.3 mm (8.4 in)	28 May 1889
Jun	150.6 mm (5.9 in)	11 June 1991
Jul	198.1 mm (7.8 in)	7 July 1931
Aug	327.6 mm (12.9 in)	6 August 1986
Sep	144.5 mm (5.7 in)	10 September 1879
Oct	161.8 mm (6.4 in)	13 October 1902
Nov	234.6 mm (9.2 in)	9 November 1984
Dec	126.0 mm (5.0 in)	9 December 1970

Period of Record Coverage

1859 to 2020

162 years of record at Sydney (Observatory Hill), 1859 to 2020. 1 years have data for under 90 percent of days and are left out of rankings: 2020.

Days with data per year at Sydney (Observatory Hill)
Year	Days with data	Share of year	Complete
1859	365	100%	Yes
1860	366	100%	Yes
1861	365	100%	Yes
1862	365	100%	Yes
1863	365	100%	Yes
1864	366	100%	Yes
1865	364	100%	Yes
1866	365	100%	Yes
1867	365	100%	Yes
1868	366	100%	Yes
1869	365	100%	Yes
1870	365	100%	Yes
1871	365	100%	Yes
1872	366	100%	Yes
1873	365	100%	Yes
1874	365	100%	Yes
1875	365	100%	Yes
1876	366	100%	Yes
1877	365	100%	Yes
1878	365	100%	Yes
1879	365	100%	Yes
1880	366	100%	Yes
1881	365	100%	Yes
1882	365	100%	Yes
1883	365	100%	Yes
1884	366	100%	Yes
1885	365	100%	Yes
1886	365	100%	Yes
1887	365	100%	Yes
1888	365	100%	Yes
1889	365	100%	Yes
1890	365	100%	Yes
1891	365	100%	Yes
1892	366	100%	Yes
1893	365	100%	Yes
1894	365	100%	Yes
1895	365	100%	Yes
1896	366	100%	Yes
1897	364	100%	Yes
1898	365	100%	Yes
1899	365	100%	Yes
1900	365	100%	Yes
1901	365	100%	Yes
1902	365	100%	Yes
1903	365	100%	Yes
1904	365	100%	Yes
1905	365	100%	Yes
1906	365	100%	Yes
1907	365	100%	Yes
1908	366	100%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	366	100%	Yes
1913	365	100%	Yes
1914	365	100%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	365	100%	Yes
1918	365	100%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	365	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	363	99%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	357	98%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	364	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	364	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	243	66%	No

Latest Records

Latest records at Sydney (Observatory Hill)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 2020	Sydney (Observatory Hill), AU	daily rain	75.0 mm (3.0 in)	18.6 mm (0.7 in)	68 years	41 of 100 (Notable)
27 July 2020	Sydney (Observatory Hill), AU	daily high min	13.6 C (56.5 F)	0.2 C (0.4 F)	19 years	15 of 100 (Routine)
1 July 2020	Sydney (Observatory Hill), AU	daily high max (Tie)	22.5 C (72.5 F)	tie	80 years	8 of 100 (Routine)
8 May 2020	Sydney (Observatory Hill), AU	daily high max	28.5 C (83.3 F)	2.2 C (4.0 F)	2 years	18 of 100 (Routine)
1 February 2020	Sydney (Observatory Hill), AU	daily high min	24.1 C (75.4 F)	0.8 C (1.4 F)	52 years	28 of 100 (Routine)
23 January 2020	Sydney (Observatory Hill), AU	daily high max (Tie)	41.3 C (106.3 F)	tie	9 years	3 of 100 (Routine)
26 October 2019	Sydney (Observatory Hill), AU	daily high min	23.0 C (73.4 F)	3.2 C (5.8 F)	124 years	52 of 100 (Notable)
25 October 2019	Sydney (Observatory Hill), AU	daily high max	37.2 C (99.0 F)	2.8 C (5.0 F)	108 years	46 of 100 (Notable)
21 September 2019	Sydney (Observatory Hill), AU	daily high min	17.5 C (63.5 F)	0.8 C (1.4 F)	94 years	41 of 100 (Notable)
18 September 2019	Sydney (Observatory Hill), AU	daily rain	65.6 mm (2.6 in)	25.0 mm (1.0 in)	104 years	61 of 100 (Major)
6 September 2019	Sydney (Observatory Hill), AU	daily high max	28.8 C (83.8 F)	0.9 C (1.6 F)	65 years	31 of 100 (Routine)
21 July 2019	Sydney (Observatory Hill), AU	daily high max	23.9 C (75.0 F)	0.5 C (0.9 F)	9 years	14 of 100 (Routine)
26 May 2019	Sydney (Observatory Hill), AU	daily high max (Tie)	23.7 C (74.7 F)	tie	108 years	10 of 100 (Routine)
21 May 2019	Sydney (Observatory Hill), AU	daily high max	27.2 C (81.0 F)	0.6 C (1.1 F)	44 years	25 of 100 (Routine)
2 May 2019	Sydney (Observatory Hill), AU	daily high min	19.5 C (67.1 F)	1.2 C (2.2 F)	18 years	20 of 100 (Routine)
8 April 2019	Sydney (Observatory Hill), AU	daily high max	32.5 C (90.5 F)	1.3 C (2.3 F)	84 years	39 of 100 (Notable)
31 January 2019	Sydney (Observatory Hill), AU	daily high max	39.6 C (103.3 F)	0.2 C (0.4 F)	1 year	10 of 100 (Routine)
17 January 2019	Sydney (Observatory Hill), AU	daily high min	22.8 C (73.0 F)	0.5 C (0.9 F)	63 years	30 of 100 (Routine)
28 November 2018	Sydney (Observatory Hill), AU	daily rain	105.6 mm (4.2 in)	77.2 mm (3.0 in)	12 years	53 of 100 (Notable)
7 November 2018	Sydney (Observatory Hill), AU	daily high min	22.5 C (72.5 F)	1.3 C (2.3 F)	7 years	17 of 100 (Routine)

Climate Trend

145 complete years, 1859 to 2019

One stripe for each of 145 complete years at Sydney (Observatory Hill), 1859 to 2019. Blue stripes are years cooler than the station's own mean of 17.9 C (64.1 F); red stripes are warmer. The coolest year was 1860, at 16.6 C (61.8 F), and the warmest was 2016, at 19.7 C (67.4 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Sydney (Observatory Hill) as warming stripes, 1859 to 2019
Year	Annual mean temperature	Difference from the station mean
1859	16.9 C	-1.00 C
1860	16.6 C	-1.30 C
1861	16.8 C	-1.02 C
1862	17.0 C	-0.84 C
1863	17.0 C	-0.87 C
1866	17.3 C	-0.55 C
1868	17.4 C	-0.44 C
1871	16.9 C	-0.97 C
1872	17.0 C	-0.87 C
1873	17.2 C	-0.66 C
1874	17.2 C	-0.63 C
1875	17.4 C	-0.46 C
1876	17.5 C	-0.33 C
1877	17.6 C	-0.23 C
1878	17.6 C	-0.29 C
1879	16.7 C	-1.15 C
1880	17.1 C	-0.76 C
1881	16.8 C	-1.07 C
1882	17.4 C	-0.46 C
1885	17.7 C	-0.13 C
1886	17.5 C	-0.36 C
1887	17.1 C	-0.78 C
1888	17.2 C	-0.68 C
1889	17.5 C	-0.31 C
1890	17.3 C	-0.56 C
1891	17.1 C	-0.72 C
1892	16.9 C	-0.93 C
1893	16.9 C	-0.91 C
1894	17.4 C	-0.50 C
1895	17.3 C	-0.58 C
1896	17.3 C	-0.58 C
1897	17.6 C	-0.23 C
1898	17.5 C	-0.33 C
1899	17.3 C	-0.52 C
1900	17.2 C	-0.63 C
1901	17.1 C	-0.74 C
1902	17.3 C	-0.55 C
1904	17.2 C	-0.69 C
1906	17.5 C	-0.33 C
1908	17.2 C	-0.62 C
1909	17.0 C	-0.89 C
1910	17.4 C	-0.42 C
1911	17.4 C	-0.46 C
1912	17.5 C	-0.37 C
1913	17.7 C	-0.19 C
1916	17.4 C	-0.46 C
1917	17.2 C	-0.69 C
1918	17.4 C	-0.49 C
1919	18.3 C	+0.40 C
1920	17.3 C	-0.51 C
1921	18.0 C	+0.15 C
1922	18.1 C	+0.20 C
1923	18.0 C	+0.14 C
1924	17.4 C	-0.41 C
1925	17.3 C	-0.55 C
1926	18.0 C	+0.17 C
1927	17.0 C	-0.84 C
1928	18.2 C	+0.35 C
1929	17.4 C	-0.48 C
1930	17.6 C	-0.26 C
1931	17.5 C	-0.35 C
1932	17.4 C	-0.43 C
1933	17.1 C	-0.74 C
1934	17.3 C	-0.51 C
1937	17.7 C	-0.13 C
1938	18.0 C	+0.10 C
1939	17.8 C	-0.09 C
1940	18.0 C	+0.18 C
1941	17.4 C	-0.46 C
1942	17.8 C	-0.07 C
1945	17.4 C	-0.42 C
1946	17.6 C	-0.27 C
1947	17.6 C	-0.28 C
1948	17.2 C	-0.70 C
1949	17.4 C	-0.45 C
1950	17.9 C	0.00 C
1951	17.7 C	-0.16 C
1952	17.6 C	-0.24 C
1953	17.6 C	-0.22 C
1954	17.8 C	-0.10 C
1955	17.8 C	-0.02 C
1956	17.6 C	-0.22 C
1957	17.8 C	-0.01 C
1958	18.3 C	+0.46 C
1959	18.0 C	+0.18 C
1960	17.6 C	-0.25 C
1961	17.8 C	-0.05 C
1962	17.8 C	-0.03 C
1963	17.8 C	-0.02 C
1964	18.1 C	+0.28 C
1965	18.0 C	+0.11 C
1966	17.6 C	-0.26 C
1967	17.9 C	+0.04 C
1968	18.3 C	+0.48 C
1969	18.1 C	+0.23 C
1970	17.8 C	-0.10 C
1971	17.9 C	+0.04 C
1972	18.0 C	+0.16 C
1973	18.8 C	+0.95 C
1974	17.9 C	+0.02 C
1975	18.4 C	+0.57 C
1976	18.1 C	+0.26 C
1977	18.5 C	+0.61 C
1978	18.0 C	+0.15 C
1979	18.5 C	+0.61 C
1980	18.9 C	+1.02 C
1981	18.4 C	+0.58 C
1982	18.2 C	+0.34 C
1983	18.4 C	+0.54 C
1984	17.9 C	+0.08 C
1985	18.1 C	+0.28 C
1986	18.2 C	+0.30 C
1987	18.3 C	+0.46 C
1988	19.0 C	+1.11 C
1989	18.4 C	+0.52 C
1990	18.4 C	+0.55 C
1991	18.7 C	+0.89 C
1992	17.7 C	-0.14 C
1993	18.4 C	+0.50 C
1994	18.3 C	+0.46 C
1995	17.9 C	+0.06 C
1996	18.1 C	+0.22 C
1997	18.4 C	+0.54 C
1998	18.8 C	+0.99 C
1999	18.3 C	+0.48 C
2000	18.6 C	+0.78 C
2001	18.9 C	+1.07 C
2002	18.8 C	+0.97 C
2003	18.6 C	+0.75 C
2004	19.1 C	+1.20 C
2005	19.1 C	+1.24 C
2006	18.9 C	+1.02 C
2007	18.9 C	+1.08 C
2008	18.2 C	+0.34 C
2009	19.0 C	+1.19 C
2010	18.8 C	+0.97 C
2011	18.7 C	+0.86 C
2012	18.5 C	+0.68 C
2013	19.4 C	+1.51 C
2014	19.3 C	+1.45 C
2015	19.1 C	+1.21 C
2016	19.7 C	+1.80 C
2017	19.5 C	+1.62 C
2018	19.2 C	+1.31 C
2019	19.6 C	+1.70 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.1) per decade over 1859 to 2019. In Fahrenheit: 0.2 F (0.2 to 0.2) per decade. The slope is a straight line fitted to 145 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Sydney (Observatory Hill)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.1) per decade	0.2 F (0.2 to 0.2) per decade	1859 to 2019	145	Rise
Mean daily maximum	0.1 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.3) per decade	1859 to 2019	145	Rise
Mean daily minimum	0.1 C (0.1 to 0.1) per decade	0.2 F (0.2 to 0.2) per decade	1859 to 2019	145	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1858 to 2020

Yearly extremes at Sydney (Observatory Hill): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.4 C (110.1 F)	2018	38.3 C (100.9 F)	162
Coldest night (TNn)	2.1 C (35.8 F)	1932	4.6 C (40.3 F)	162
Wettest day (Rx1day)	327.6 mm (12.9 in)	1986	102.9 mm (4.1 in)	163
Wettest five days (Rx5day)	513.5 mm (20.2 in)	1889	183.2 mm (7.2 in)	163
Longest dry spell (CDD)	57 days	1995	23 days	163

Hottest day (TXx)

The hottest day of the year at Sydney (Observatory Hill), 1858 to 2020. The record is 43.4 C (110.1 F) in 2018, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Sydney (Observatory Hill) by year
Year	Hottest day (TXx)
1858	n/a
1859	36.9 C (98.4 F)
1860	37.4 C (99.3 F)
1861	36.1 C (97.0 F)
1862	38.1 C (100.6 F)
1863	41.6 C (106.9 F)
1864	34.3 C (93.7 F)
1865	38.9 C (102.0 F)
1866	38.3 C (100.9 F)
1867	37.3 C (99.1 F)
1868	38.6 C (101.5 F)
1869	39.2 C (102.6 F)
1870	40.7 C (105.3 F)
1871	39.9 C (103.8 F)
1872	36.8 C (98.2 F)
1873	37.8 C (100.0 F)
1874	35.7 C (96.3 F)
1875	37.2 C (99.0 F)
1876	36.1 C (97.0 F)
1877	36.3 C (97.3 F)
1878	39.3 C (102.7 F)
1879	35.8 C (96.4 F)
1880	34.9 C (94.8 F)
1881	38.1 C (100.6 F)
1882	37.7 C (99.9 F)
1883	37.6 C (99.7 F)
1884	38.2 C (100.8 F)
1885	36.4 C (97.5 F)
1886	36.3 C (97.3 F)
1887	34.6 C (94.3 F)
1888	36.8 C (98.2 F)
1889	39.3 C (102.7 F)
1890	34.5 C (94.1 F)
1891	36.4 C (97.5 F)
1892	32.2 C (90.0 F)
1893	34.2 C (93.6 F)
1894	36.4 C (97.5 F)
1895	35.6 C (96.1 F)
1896	42.5 C (108.5 F)
1897	37.4 C (99.3 F)
1898	37.2 C (99.0 F)
1899	38.9 C (102.0 F)
1900	40.1 C (104.2 F)
1901	40.0 C (104.0 F)
1902	37.8 C (100.0 F)
1903	36.7 C (98.1 F)
1904	41.9 C (107.4 F)
1905	36.7 C (98.1 F)
1906	36.3 C (97.3 F)
1907	33.0 C (91.4 F)
1908	38.8 C (101.8 F)
1909	40.0 C (104.0 F)
1910	35.9 C (96.6 F)
1911	38.3 C (100.9 F)
1912	39.4 C (102.9 F)
1913	38.1 C (100.6 F)
1914	38.6 C (101.5 F)
1915	40.3 C (104.5 F)
1916	36.1 C (97.0 F)
1917	37.8 C (100.0 F)
1918	38.3 C (100.9 F)
1919	37.8 C (100.0 F)
1920	36.7 C (98.1 F)
1921	37.3 C (99.1 F)
1922	39.8 C (103.6 F)
1923	39.3 C (102.7 F)
1924	36.7 C (98.1 F)
1925	40.2 C (104.4 F)
1926	42.1 C (107.8 F)
1927	38.1 C (100.6 F)
1928	38.1 C (100.6 F)
1929	41.2 C (106.2 F)
1930	41.1 C (106.0 F)
1931	40.1 C (104.2 F)
1932	40.9 C (105.6 F)
1933	38.6 C (101.5 F)
1934	39.7 C (103.5 F)
1935	38.7 C (101.7 F)
1936	37.7 C (99.9 F)
1937	36.7 C (98.1 F)
1938	36.8 C (98.2 F)
1939	38.8 C (101.8 F)
1940	41.3 C (106.3 F)
1941	39.6 C (103.3 F)
1942	41.9 C (107.4 F)
1943	37.3 C (99.1 F)
1944	39.4 C (102.9 F)
1945	38.8 C (101.8 F)
1946	40.3 C (104.5 F)
1947	34.6 C (94.3 F)
1948	36.2 C (97.2 F)
1949	36.6 C (97.9 F)
1950	39.5 C (103.1 F)
1951	37.9 C (100.2 F)
1952	41.0 C (105.8 F)
1953	41.9 C (107.4 F)
1954	36.0 C (96.8 F)
1955	40.1 C (104.2 F)
1956	36.3 C (97.3 F)
1957	42.2 C (108.0 F)
1958	36.4 C (97.5 F)
1959	34.4 C (93.9 F)
1960	42.4 C (108.3 F)
1961	41.6 C (106.9 F)
1962	36.9 C (98.4 F)
1963	36.7 C (98.1 F)
1964	40.8 C (105.4 F)
1965	38.8 C (101.8 F)
1966	35.8 C (96.4 F)
1967	38.8 C (101.8 F)
1968	36.3 C (97.3 F)
1969	38.9 C (102.0 F)
1970	36.0 C (96.8 F)
1971	35.2 C (95.4 F)
1972	39.9 C (103.8 F)
1973	39.6 C (103.3 F)
1974	38.4 C (101.1 F)
1975	39.6 C (103.3 F)
1976	37.3 C (99.1 F)
1977	41.4 C (106.5 F)
1978	37.4 C (99.3 F)
1979	39.9 C (103.8 F)
1980	41.3 C (106.3 F)
1981	38.8 C (101.8 F)
1982	41.8 C (107.2 F)
1983	40.0 C (104.0 F)
1984	36.3 C (97.3 F)
1985	39.0 C (102.2 F)
1986	39.7 C (103.5 F)
1987	37.0 C (98.6 F)
1988	39.2 C (102.6 F)
1989	36.7 C (98.1 F)
1990	40.0 C (104.0 F)
1991	40.8 C (105.4 F)
1992	35.6 C (96.1 F)
1993	37.0 C (98.6 F)
1994	40.9 C (105.6 F)
1995	36.5 C (97.7 F)
1996	34.5 C (94.1 F)
1997	37.9 C (100.2 F)
1998	38.2 C (100.8 F)
1999	32.5 C (90.5 F)
2000	38.7 C (101.7 F)
2001	35.9 C (96.6 F)
2002	37.9 C (100.2 F)
2003	39.0 C (102.2 F)
2004	40.0 C (104.0 F)
2005	39.0 C (102.2 F)
2006	38.4 C (101.1 F)
2007	38.7 C (101.7 F)
2008	35.0 C (95.0 F)
2009	40.9 C (105.6 F)
2010	41.3 C (106.3 F)
2011	41.5 C (106.7 F)
2012	34.2 C (93.6 F)
2013	42.3 C (108.1 F)
2014	36.5 C (97.7 F)
2015	40.9 C (105.6 F)
2016	39.2 C (102.6 F)
2017	39.4 C (102.9 F)
2018	43.4 C (110.1 F)
2019	39.6 C (103.3 F)
2020	41.3 C (106.3 F)

Coldest night (TNn)

The coldest night of the year at Sydney (Observatory Hill), 1858 to 2020. The record is 2.1 C (35.8 F) in 1932, marked on the chart; the median year is 4.6 C (40.3 F).

Coldest night (TNn) at Sydney (Observatory Hill) by year
Year	Coldest night (TNn)
1858	n/a
1859	2.8 C (37.0 F)
1860	3.2 C (37.8 F)
1861	2.2 C (36.0 F)
1862	2.7 C (36.9 F)
1863	3.7 C (38.7 F)
1864	4.8 C (40.6 F)
1865	4.1 C (39.4 F)
1866	3.4 C (38.1 F)
1867	4.6 C (40.3 F)
1868	4.9 C (40.8 F)
1869	4.3 C (39.7 F)
1870	3.7 C (38.7 F)
1871	3.7 C (38.7 F)
1872	2.7 C (36.9 F)
1873	3.3 C (37.9 F)
1874	2.7 C (36.9 F)
1875	4.6 C (40.3 F)
1876	3.9 C (39.0 F)
1877	5.3 C (41.5 F)
1878	3.7 C (38.7 F)
1879	4.8 C (40.6 F)
1880	3.8 C (38.8 F)
1881	4.2 C (39.6 F)
1882	3.8 C (38.8 F)
1883	4.3 C (39.7 F)
1884	4.8 C (40.6 F)
1885	4.8 C (40.6 F)
1886	5.3 C (41.5 F)
1887	4.8 C (40.6 F)
1888	3.8 C (38.8 F)
1889	5.3 C (41.5 F)
1890	2.2 C (36.0 F)
1891	4.3 C (39.7 F)
1892	4.0 C (39.2 F)
1893	3.7 C (38.7 F)
1894	4.7 C (40.5 F)
1895	2.7 C (36.9 F)
1896	4.3 C (39.7 F)
1897	5.2 C (41.4 F)
1898	4.7 C (40.5 F)
1899	3.8 C (38.8 F)
1900	4.1 C (39.4 F)
1901	3.6 C (38.5 F)
1902	4.6 C (40.3 F)
1903	3.6 C (38.5 F)
1904	4.2 C (39.6 F)
1905	3.7 C (38.7 F)
1906	3.2 C (37.8 F)
1907	3.3 C (37.9 F)
1908	3.2 C (37.8 F)
1909	3.8 C (38.8 F)
1910	5.6 C (42.1 F)
1911	3.8 C (38.8 F)
1912	5.5 C (41.9 F)
1913	5.0 C (41.0 F)
1914	6.0 C (42.8 F)
1915	5.6 C (42.1 F)
1916	5.7 C (42.3 F)
1917	4.8 C (40.6 F)
1918	3.0 C (37.4 F)
1919	3.6 C (38.5 F)
1920	3.3 C (37.9 F)
1921	4.4 C (39.9 F)
1922	3.8 C (38.8 F)
1923	5.2 C (41.4 F)
1924	4.3 C (39.7 F)
1925	4.6 C (40.3 F)
1926	5.4 C (41.7 F)
1927	3.8 C (38.8 F)
1928	5.0 C (41.0 F)
1929	2.9 C (37.2 F)
1930	5.1 C (41.2 F)
1931	3.3 C (37.9 F)
1932	2.1 C (35.8 F)
1933	2.9 C (37.2 F)
1934	4.5 C (40.1 F)
1935	4.1 C (39.4 F)
1936	5.0 C (41.0 F)
1937	4.7 C (40.5 F)
1938	2.8 C (37.0 F)
1939	4.2 C (39.6 F)
1940	4.7 C (40.5 F)
1941	4.3 C (39.7 F)
1942	4.0 C (39.2 F)
1943	3.2 C (37.8 F)
1944	3.8 C (38.8 F)
1945	4.2 C (39.6 F)
1946	5.1 C (41.2 F)
1947	3.8 C (38.8 F)
1948	3.5 C (38.3 F)
1949	3.9 C (39.0 F)
1950	4.9 C (40.8 F)
1951	5.2 C (41.4 F)
1952	4.3 C (39.7 F)
1953	4.4 C (39.9 F)
1954	4.7 C (40.5 F)
1955	4.4 C (39.9 F)
1956	4.7 C (40.5 F)
1957	4.6 C (40.3 F)
1958	4.3 C (39.7 F)
1959	4.8 C (40.6 F)
1960	4.6 C (40.3 F)
1961	4.8 C (40.6 F)
1962	4.9 C (40.8 F)
1963	4.8 C (40.6 F)
1964	4.1 C (39.4 F)
1965	4.6 C (40.3 F)
1966	4.4 C (39.9 F)
1967	5.0 C (41.0 F)
1968	2.7 C (36.9 F)
1969	5.6 C (42.1 F)
1970	2.7 C (36.9 F)
1971	4.3 C (39.7 F)
1972	5.7 C (42.3 F)
1973	6.0 C (42.8 F)
1974	3.6 C (38.5 F)
1975	4.9 C (40.8 F)
1976	5.7 C (42.3 F)
1977	4.6 C (40.3 F)
1978	3.2 C (37.8 F)
1979	5.3 C (41.5 F)
1980	5.4 C (41.7 F)
1981	4.2 C (39.6 F)
1982	4.1 C (39.4 F)
1983	4.4 C (39.9 F)
1984	5.5 C (41.9 F)
1985	5.1 C (41.2 F)
1986	3.1 C (37.6 F)
1987	4.9 C (40.8 F)
1988	7.1 C (44.8 F)
1989	5.2 C (41.4 F)
1990	5.1 C (41.2 F)
1991	5.3 C (41.5 F)
1992	5.1 C (41.2 F)
1993	5.9 C (42.6 F)
1994	5.1 C (41.2 F)
1995	4.3 C (39.7 F)
1996	5.0 C (41.0 F)
1997	5.8 C (42.4 F)
1998	5.0 C (41.0 F)
1999	6.2 C (43.2 F)
2000	5.6 C (42.1 F)
2001	5.8 C (42.4 F)
2002	4.3 C (39.7 F)
2003	4.9 C (40.8 F)
2004	5.9 C (42.6 F)
2005	5.1 C (41.2 F)
2006	5.8 C (42.4 F)
2007	3.7 C (38.7 F)
2008	5.3 C (41.5 F)
2009	5.9 C (42.6 F)
2010	4.3 C (39.7 F)
2011	5.5 C (41.9 F)
2012	5.5 C (41.9 F)
2013	7.0 C (44.6 F)
2014	5.5 C (41.9 F)
2015	5.0 C (41.0 F)
2016	5.4 C (41.7 F)
2017	5.4 C (41.7 F)
2018	4.6 C (40.3 F)
2019	6.1 C (43.0 F)
2020	6.3 C (43.3 F)

Wettest day (Rx1day)

The wettest day of the year at Sydney (Observatory Hill), 1858 to 2020. The record is 327.6 mm (12.9 in) in 1986, marked on the chart; the median year is 102.9 mm (4.1 in).

Wettest day (Rx1day) at Sydney (Observatory Hill) by year
Year	Wettest day (Rx1day)
1858	30.0 mm (1.2 in)
1859	94.0 mm (3.7 in)
1860	191.0 mm (7.5 in)
1861	168.1 mm (6.6 in)
1862	48.3 mm (1.9 in)
1863	95.3 mm (3.8 in)
1864	99.8 mm (3.9 in)
1865	105.4 mm (4.1 in)
1866	76.5 mm (3.0 in)
1867	143.5 mm (5.6 in)
1868	157.0 mm (6.2 in)
1869	113.0 mm (4.4 in)
1870	102.4 mm (4.0 in)
1871	82.3 mm (3.2 in)
1872	71.1 mm (2.8 in)
1873	226.1 mm (8.9 in)
1874	101.3 mm (4.0 in)
1875	98.8 mm (3.9 in)
1876	71.4 mm (2.8 in)
1877	124.2 mm (4.9 in)
1878	191.3 mm (7.5 in)
1879	144.5 mm (5.7 in)
1880	51.8 mm (2.0 in)
1881	108.0 mm (4.3 in)
1882	164.6 mm (6.5 in)
1883	110.0 mm (4.3 in)
1884	163.8 mm (6.4 in)
1885	123.2 mm (4.9 in)
1886	118.9 mm (4.7 in)
1887	71.9 mm (2.8 in)
1888	69.9 mm (2.8 in)
1889	212.3 mm (8.4 in)
1890	143.8 mm (5.7 in)
1891	74.9 mm (2.9 in)
1892	110.2 mm (4.3 in)
1893	83.8 mm (3.3 in)
1894	78.7 mm (3.1 in)
1895	59.9 mm (2.4 in)
1896	123.7 mm (4.9 in)
1897	69.3 mm (2.7 in)
1898	153.7 mm (6.1 in)
1899	76.5 mm (3.0 in)
1900	107.4 mm (4.2 in)
1901	112.0 mm (4.4 in)
1902	161.8 mm (6.4 in)
1903	39.9 mm (1.6 in)
1904	121.2 mm (4.8 in)
1905	92.5 mm (3.6 in)
1906	92.2 mm (3.6 in)
1907	91.9 mm (3.6 in)
1908	145.0 mm (5.7 in)
1909	45.0 mm (1.8 in)
1910	120.7 mm (4.8 in)
1911	179.8 mm (7.1 in)
1912	112.0 mm (4.4 in)
1913	165.6 mm (6.5 in)
1914	85.6 mm (3.4 in)
1915	68.3 mm (2.7 in)
1916	86.9 mm (3.4 in)
1917	80.3 mm (3.2 in)
1918	165.9 mm (6.5 in)
1919	113.8 mm (4.5 in)
1920	105.2 mm (4.1 in)
1921	106.2 mm (4.2 in)
1922	95.0 mm (3.7 in)
1923	65.5 mm (2.6 in)
1924	47.8 mm (1.9 in)
1925	122.9 mm (4.8 in)
1926	116.6 mm (4.6 in)
1927	124.2 mm (4.9 in)
1928	60.7 mm (2.4 in)
1929	99.3 mm (3.9 in)
1930	76.7 mm (3.0 in)
1931	198.1 mm (7.8 in)
1932	81.8 mm (3.2 in)
1933	96.5 mm (3.8 in)
1934	85.1 mm (3.4 in)
1935	66.8 mm (2.6 in)
1936	54.9 mm (2.2 in)
1937	86.1 mm (3.4 in)
1938	147.1 mm (5.8 in)
1939	58.4 mm (2.3 in)
1940	84.6 mm (3.3 in)
1941	39.1 mm (1.5 in)
1942	280.7 mm (11.1 in)
1943	83.8 mm (3.3 in)
1944	48.8 mm (1.9 in)
1945	106.7 mm (4.2 in)
1946	102.9 mm (4.1 in)
1947	65.0 mm (2.6 in)
1948	72.6 mm (2.9 in)
1949	146.1 mm (5.8 in)
1950	119.4 mm (4.7 in)
1951	105.7 mm (4.2 in)
1952	127.3 mm (5.0 in)
1953	105.2 mm (4.1 in)
1954	113.3 mm (4.5 in)
1955	188.2 mm (7.4 in)
1956	192.0 mm (7.6 in)
1957	90.4 mm (3.6 in)
1958	148.3 mm (5.8 in)
1959	134.6 mm (5.3 in)
1960	140.7 mm (5.5 in)
1961	123.2 mm (4.9 in)
1962	111.8 mm (4.4 in)
1963	130.0 mm (5.1 in)
1964	101.9 mm (4.0 in)
1965	63.2 mm (2.5 in)
1966	120.4 mm (4.7 in)
1967	95.3 mm (3.8 in)
1968	55.1 mm (2.2 in)
1969	129.0 mm (5.1 in)
1970	126.0 mm (5.0 in)
1971	140.0 mm (5.5 in)
1972	88.6 mm (3.5 in)
1973	168.9 mm (6.6 in)
1974	87.0 mm (3.4 in)
1975	198.2 mm (7.8 in)
1976	77.0 mm (3.0 in)
1977	113.6 mm (4.5 in)
1978	98.6 mm (3.9 in)
1979	68.8 mm (2.7 in)
1980	65.6 mm (2.6 in)
1981	69.0 mm (2.7 in)
1982	81.8 mm (3.2 in)
1983	109.6 mm (4.3 in)
1984	234.6 mm (9.2 in)
1985	81.2 mm (3.2 in)
1986	327.6 mm (12.9 in)
1987	121.2 mm (4.8 in)
1988	191.0 mm (7.5 in)
1989	79.6 mm (3.1 in)
1990	243.6 mm (9.6 in)
1991	150.6 mm (5.9 in)
1992	190.0 mm (7.5 in)
1993	89.0 mm (3.5 in)
1994	60.8 mm (2.4 in)
1995	73.6 mm (2.9 in)
1996	127.4 mm (5.0 in)
1997	76.8 mm (3.0 in)
1998	165.2 mm (6.5 in)
1999	81.0 mm (3.2 in)
2000	60.2 mm (2.4 in)
2001	110.0 mm (4.3 in)
2002	130.4 mm (5.1 in)
2003	67.8 mm (2.7 in)
2004	105.4 mm (4.1 in)
2005	73.0 mm (2.9 in)
2006	107.2 mm (4.2 in)
2007	112.2 mm (4.4 in)
2008	77.4 mm (3.0 in)
2009	73.2 mm (2.9 in)
2010	77.4 mm (3.0 in)
2011	99.4 mm (3.9 in)
2012	109.4 mm (4.3 in)
2013	95.2 mm (3.7 in)
2014	70.8 mm (2.8 in)
2015	119.4 mm (4.7 in)
2016	94.4 mm (3.7 in)
2017	85.0 mm (3.3 in)
2018	105.6 mm (4.2 in)
2019	75.2 mm (3.0 in)
2020	176.0 mm (6.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sydney (Observatory Hill), 1858 to 2020. The record is 513.5 mm (20.2 in) in 1889, marked on the chart; the median year is 183.2 mm (7.2 in).

Wettest five days (Rx5day) at Sydney (Observatory Hill) by year
Year	Wettest five days (Rx5day)
1858	58.7 mm (2.3 in)
1859	204.2 mm (8.0 in)
1860	428.8 mm (16.9 in)
1861	321.0 mm (12.6 in)
1862	91.1 mm (3.6 in)
1863	147.3 mm (5.8 in)
1864	186.2 mm (7.3 in)
1865	125.7 mm (4.9 in)
1866	121.2 mm (4.8 in)
1867	305.0 mm (12.0 in)
1868	272.8 mm (10.7 in)
1869	262.1 mm (10.3 in)
1870	157.0 mm (6.2 in)
1871	290.9 mm (11.5 in)
1872	96.8 mm (3.8 in)
1873	433.6 mm (17.1 in)
1874	155.6 mm (6.1 in)
1875	174.5 mm (6.9 in)
1876	151.4 mm (6.0 in)
1877	284.3 mm (11.2 in)
1878	320.8 mm (12.6 in)
1879	250.6 mm (9.9 in)
1880	121.4 mm (4.8 in)
1881	150.8 mm (5.9 in)
1882	284.2 mm (11.2 in)
1883	131.9 mm (5.2 in)
1884	196.1 mm (7.7 in)
1885	317.8 mm (12.5 in)
1886	129.1 mm (5.1 in)
1887	208.1 mm (8.2 in)
1888	91.8 mm (3.6 in)
1889	513.5 mm (20.2 in)
1890	233.2 mm (9.2 in)
1891	162.1 mm (6.4 in)
1892	259.2 mm (10.2 in)
1893	152.4 mm (6.0 in)
1894	137.6 mm (5.4 in)
1895	98.4 mm (3.9 in)
1896	155.5 mm (6.1 in)
1897	190.8 mm (7.5 in)
1898	183.5 mm (7.2 in)
1899	163.9 mm (6.5 in)
1900	289.1 mm (11.4 in)
1901	234.1 mm (9.2 in)
1902	180.7 mm (7.1 in)
1903	108.4 mm (4.3 in)
1904	222.5 mm (8.8 in)
1905	126.5 mm (5.0 in)
1906	126.8 mm (5.0 in)
1907	162.5 mm (6.4 in)
1908	254.2 mm (10.0 in)
1909	88.5 mm (3.5 in)
1910	203.5 mm (8.0 in)
1911	248.7 mm (9.8 in)
1912	224.1 mm (8.8 in)
1913	210.6 mm (8.3 in)
1914	215.7 mm (8.5 in)
1915	185.9 mm (7.3 in)
1916	217.0 mm (8.5 in)
1917	173.3 mm (6.8 in)
1918	241.3 mm (9.5 in)
1919	228.5 mm (9.0 in)
1920	298.5 mm (11.8 in)
1921	134.6 mm (5.3 in)
1922	168.9 mm (6.6 in)
1923	131.0 mm (5.2 in)
1924	134.9 mm (5.3 in)
1925	200.8 mm (7.9 in)
1926	224.4 mm (8.8 in)
1927	348.7 mm (13.7 in)
1928	142.2 mm (5.6 in)
1929	192.8 mm (7.6 in)
1930	113.4 mm (4.5 in)
1931	317.0 mm (12.5 in)
1932	108.8 mm (4.3 in)
1933	163.6 mm (6.4 in)
1934	157.9 mm (6.2 in)
1935	96.2 mm (3.8 in)
1936	110.6 mm (4.4 in)
1937	170.4 mm (6.7 in)
1938	212.5 mm (8.4 in)
1939	154.2 mm (6.1 in)
1940	138.2 mm (5.4 in)
1941	46.3 mm (1.8 in)
1942	399.1 mm (15.7 in)
1943	166.4 mm (6.6 in)
1944	78.6 mm (3.1 in)
1945	191.8 mm (7.6 in)
1946	220.0 mm (8.7 in)
1947	112.3 mm (4.4 in)
1948	131.7 mm (5.2 in)
1949	285.1 mm (11.2 in)
1950	299.8 mm (11.8 in)
1951	175.0 mm (6.9 in)
1952	212.2 mm (8.4 in)
1953	164.6 mm (6.5 in)
1954	136.7 mm (5.4 in)
1955	224.6 mm (8.8 in)
1956	313.9 mm (12.4 in)
1957	99.3 mm (3.9 in)
1958	306.5 mm (12.1 in)
1959	186.7 mm (7.4 in)
1960	238.3 mm (9.4 in)
1961	391.1 mm (15.4 in)
1962	256.8 mm (10.1 in)
1963	190.1 mm (7.5 in)
1964	303.8 mm (12.0 in)
1965	197.4 mm (7.8 in)
1966	230.1 mm (9.1 in)
1967	151.4 mm (6.0 in)
1968	110.4 mm (4.3 in)
1969	203.2 mm (8.0 in)
1970	174.5 mm (6.9 in)
1971	150.9 mm (5.9 in)
1972	242.5 mm (9.5 in)
1973	183.2 mm (7.2 in)
1974	163.2 mm (6.4 in)
1975	287.4 mm (11.3 in)
1976	190.0 mm (7.5 in)
1977	235.2 mm (9.3 in)
1978	210.8 mm (8.3 in)
1979	135.8 mm (5.3 in)
1980	134.8 mm (5.3 in)
1981	190.4 mm (7.5 in)
1982	122.4 mm (4.8 in)
1983	181.4 mm (7.1 in)
1984	427.2 mm (16.8 in)
1985	139.6 mm (5.5 in)
1986	456.4 mm (18.0 in)
1987	185.6 mm (7.3 in)
1988	347.2 mm (13.7 in)
1989	146.8 mm (5.8 in)
1990	456.4 mm (18.0 in)
1991	306.4 mm (12.1 in)
1992	347.4 mm (13.7 in)
1993	140.6 mm (5.5 in)
1994	108.8 mm (4.3 in)
1995	146.4 mm (5.8 in)
1996	164.4 mm (6.5 in)
1997	154.4 mm (6.1 in)
1998	310.0 mm (12.2 in)
1999	144.2 mm (5.7 in)
2000	137.0 mm (5.4 in)
2001	193.8 mm (7.6 in)
2002	242.6 mm (9.6 in)
2003	214.8 mm (8.5 in)
2004	149.8 mm (5.9 in)
2005	101.6 mm (4.0 in)
2006	175.8 mm (6.9 in)
2007	222.8 mm (8.8 in)
2008	131.6 mm (5.2 in)
2009	93.2 mm (3.7 in)
2010	139.4 mm (5.5 in)
2011	263.6 mm (10.4 in)
2012	165.6 mm (6.5 in)
2013	144.6 mm (5.7 in)
2014	107.8 mm (4.2 in)
2015	269.8 mm (10.6 in)
2016	227.8 mm (9.0 in)
2017	160.6 mm (6.3 in)
2018	136.0 mm (5.4 in)
2019	149.0 mm (5.9 in)
2020	392.0 mm (15.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sydney (Observatory Hill), 1858 to 2020. The record is 57 days in 1995, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Sydney (Observatory Hill) by year
Year	Longest dry spell (CDD)
1858	19 days
1859	18 days
1860	26 days
1861	18 days
1862	24 days
1863	16 days
1864	21 days
1865	28 days
1866	23 days
1867	24 days
1868	34 days
1869	19 days
1870	23 days
1871	29 days
1872	24 days
1873	25 days
1874	18 days
1875	16 days
1876	27 days
1877	20 days
1878	44 days
1879	19 days
1880	38 days
1881	18 days
1882	35 days
1883	21 days
1884	19 days
1885	45 days
1886	21 days
1887	19 days
1888	27 days
1889	14 days
1890	20 days
1891	14 days
1892	21 days
1893	16 days
1894	23 days
1895	26 days
1896	19 days
1897	23 days
1898	28 days
1899	22 days
1900	25 days
1901	23 days
1902	28 days
1903	14 days
1904	22 days
1905	20 days
1906	22 days
1907	22 days
1908	18 days
1909	18 days
1910	31 days
1911	24 days
1912	31 days
1913	23 days
1914	18 days
1915	42 days
1916	19 days
1917	34 days
1918	41 days
1919	15 days
1920	27 days
1921	24 days
1922	20 days
1923	20 days
1924	16 days
1925	26 days
1926	26 days
1927	30 days
1928	21 days
1929	27 days
1930	24 days
1931	22 days
1932	22 days
1933	26 days
1934	20 days
1935	31 days
1936	15 days
1937	15 days
1938	26 days
1939	29 days
1940	25 days
1941	22 days
1942	24 days
1943	29 days
1944	20 days
1945	17 days
1946	44 days
1947	20 days
1948	27 days
1949	17 days
1950	14 days
1951	26 days
1952	25 days
1953	23 days
1954	32 days
1955	16 days
1956	21 days
1957	44 days
1958	22 days
1959	22 days
1960	19 days
1961	24 days
1962	34 days
1963	21 days
1964	25 days
1965	30 days
1966	27 days
1967	34 days
1968	23 days
1969	22 days
1970	35 days
1971	27 days
1972	33 days
1973	40 days
1974	35 days
1975	40 days
1976	22 days
1977	28 days
1978	26 days
1979	25 days
1980	25 days
1981	26 days
1982	28 days
1983	15 days
1984	21 days
1985	20 days
1986	26 days
1987	22 days
1988	36 days
1989	47 days
1990	20 days
1991	19 days
1992	15 days
1993	21 days
1994	23 days
1995	57 days
1996	21 days
1997	24 days
1998	13 days
1999	21 days
2000	18 days
2001	24 days
2002	34 days
2003	18 days
2004	27 days
2005	49 days
2006	32 days
2007	20 days
2008	19 days
2009	15 days
2010	15 days
2011	21 days
2012	29 days
2013	35 days
2014	30 days
2015	24 days
2016	21 days
2017	52 days
2018	30 days
2019	28 days
2020	19 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

161 years, 1859 to 2019

A day with at least 100.9 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 273.2 mm (10.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Sydney (Observatory Hill): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	100.9 mm (4.0 in)
5 years	140.6 mm (5.5 in)
10 years	169.3 mm (6.7 in)
25 years	208.5 mm (8.2 in)
50 years	239.9 mm (9.4 in)
100 years	273.2 mm (10.8 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 161 years of values from 1859 to 2019.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 327.6 mm (12.9 in) in 1986; 280.7 mm (11.1 in) in 1942; 243.6 mm (9.6 in) in 1990.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2005 to 2019 against 1961 to 1990

Over 2005 to 2019, Sydney (Observatory Hill) had a mean temperature of 19.1 C (66.3 F) and 1,131.5 mm (44.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Maryville (Australia, 117 km away), Samford Csiro (Australia, 740 km away) and Grafton Olympic Pool (Australia, 492 km away).

Climate twins of Sydney (Observatory Hill): stations whose 1961 to 1990 climate is closest to its 2005 to 2019 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Maryville	Australia	117 km (73 mi)	18.4 C (65.2 F)	1,151.8 mm (45.3 in)	0.71
Samford Csiro	Australia	740 km (460 mi)	19.2 C (66.6 F)	1,255.4 mm (49.4 in)	0.71
Grafton Olympic Pool	Australia	492 km (306 mi)	19.5 C (67.1 F)	1,125.9 mm (44.3 in)	0.72

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Sydney (Observatory Hill) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sydney (Observatory Hill) threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).