Mornington Island Weather Records (ASN00029039)

Record envelope, standing records and threshold days for Mornington Island (ASN00029039), Australia, with 100 years of record.

Key Facts for Mornington Island

Mornington Island (ASN00029039) is a weather station in Australia at -16.66 latitude and 139.18 longitude, 9 m (28 ft) above sea level.
The station reports from 1914 to 2013, 100 years of record.
1,464 records set at Mornington Island still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Mornington Island set a daily record high maximum temperature of 36.2 C (97.2 F) on 15 October 2013.

About the Station

Location: Australia, -16.66 latitude, 139.18 longitude.
Elevation: 9 m (28 ft).
Period of record: 1914 to 2013, 100 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 Mornington Island. 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 Mornington Island, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.3 C (100.9 F)	19.5 C (67.1 F)	n/a	n/a
Feb	37.6 C (99.7 F)	20.0 C (68.0 F)	n/a	n/a
Mar	37.7 C (99.9 F)	19.0 C (66.2 F)	n/a	n/a
Apr	38.0 C (100.4 F)	12.8 C (55.0 F)	n/a	n/a
May	35.2 C (95.4 F)	5.5 C (41.9 F)	n/a	n/a
Jun	34.3 C (93.7 F)	7.0 C (44.6 F)	n/a	n/a
Jul	32.2 C (90.0 F)	5.1 C (41.2 F)	n/a	n/a
Aug	34.5 C (94.1 F)	7.2 C (45.0 F)	n/a	n/a
Sep	38.0 C (100.4 F)	11.5 C (52.7 F)	n/a	n/a
Oct	38.7 C (101.7 F)	12.6 C (54.7 F)	n/a	n/a
Nov	39.0 C (102.2 F)	18.5 C (65.3 F)	n/a	n/a
Dec	39.8 C (103.6 F)	20.0 C (68.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mornington Island still stand. 1973 holds the most, with 96.

Standing records at Mornington Island by the year they were set
Year set	Standing records
1972	10
1973	96
1974	44
1975	30
1976	45
1977	27
1978	44
1979	29
1980	24
1981	23
1982	41
1983	40
1984	31
1985	58
1986	31
1987	26
1988	38
1989	32
1990	46
1991	14
1992	34
1993	23
1994	50
1995	20
1996	26
1997	13
1998	38
1999	34
2000	31
2001	68
2002	95
2003	35
2004	19
2005	36
2006	20
2007	23
2008	18
2009	25
2010	48
2011	22
2012	14
2013	43

All-Time Record Progression

4 new records

4 all-time records were set at Mornington Island between 15 December 2004 and 6 December 2012. Each dot is a new record.

When Mornington Island set new all-time records
Date	Kind	Detail
2004-12-15	Record high maximum temperature	Record high maximum temperature 39.6 C (103.3 F)
2007-06-21	Record low maximum temperature	Record low maximum temperature 15.2 C (59.4 F)
2011-03-01	Record daily precipitation	Record daily precipitation 477.2 mm (18.8 in)
2012-12-06	Record high maximum temperature	Record high maximum temperature 39.8 C (103.6 F)

Wettest Day of Each Month

Mar: 477.2 mm (18.8 in)

The wettest day on record for each calendar month at Mornington Island. The most was 477.2 mm (18.8 in) on 1 March 2011.

Record daily precipitation for each month at Mornington Island
Month	Record daily precipitation (mm)	Date
Jan	377.2 mm (14.9 in)	18 January 1919
Feb	287.8 mm (11.3 in)	10 February 1967
Mar	477.2 mm (18.8 in)	1 March 2011
Apr	221.5 mm (8.7 in)	10 April 1931
May	88.9 mm (3.5 in)	13 May 1968
Jun	78.5 mm (3.1 in)	16 June 1939
Jul	34.6 mm (1.4 in)	14 July 2006
Aug	8.9 mm (0.35 in)	19 August 1916
Sep	21.8 mm (0.9 in)	24 September 1972
Oct	82.8 mm (3.3 in)	23 October 1978
Nov	83.2 mm (3.3 in)	13 November 1986
Dec	180.0 mm (7.1 in)	20 December 1976

Period of Record Coverage

1972 to 2013

42 years of record at Mornington Island, 1972 to 2013. 18 years have data for under 90 percent of days and are left out of rankings: 1972, 1973, 1974, 1984, 1990, 1991, 1992, 1993 and others.

Days with data per year at Mornington Island
Year	Days with data	Share of year	Complete
1972	122	33%	No
1973	281	77%	No
1974	262	72%	No
1975	357	98%	Yes
1976	361	99%	Yes
1977	339	93%	Yes
1978	346	95%	Yes
1979	365	100%	Yes
1980	346	95%	Yes
1981	351	96%	Yes
1982	356	98%	Yes
1983	343	94%	Yes
1984	328	90%	No
1985	347	95%	Yes
1986	341	93%	Yes
1987	329	90%	Yes
1988	355	97%	Yes
1989	359	98%	Yes
1990	328	90%	No
1991	218	60%	No
1992	247	67%	No
1993	211	58%	No
1994	284	78%	No
1995	217	59%	No
1996	227	62%	No
1997	251	69%	No
1998	323	88%	No
1999	302	83%	No
2000	293	80%	No
2001	319	87%	No
2002	357	98%	Yes
2003	350	96%	Yes
2004	362	99%	Yes
2005	360	99%	Yes
2006	361	99%	Yes
2007	361	99%	Yes
2008	304	83%	No
2009	365	100%	Yes
2010	361	99%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	288	79%	No

Latest Records

Latest records at Mornington Island
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 October 2013	Mornington Island, AU	daily high max	36.2 C (97.2 F)	0.8 C (1.4 F)	15 years	12 of 100 (Routine)
9 October 2013	Mornington Island, AU	daily high min	26.4 C (79.5 F)	0.4 C (0.7 F)	8 years	7 of 100 (Routine)
8 October 2013	Mornington Island, AU	daily high min	26.2 C (79.2 F)	0.2 C (0.4 F)	18 years	9 of 100 (Routine)
3 October 2013	Mornington Island, AU	daily high min	26.7 C (80.1 F)	0.5 C (0.9 F)	10 years	9 of 100 (Routine)
23 September 2013	Mornington Island, AU	daily high max	35.8 C (96.4 F)	1.4 C (2.5 F)	11 years	13 of 100 (Routine)
22 September 2013	Mornington Island, AU	daily high max	35.1 C (95.2 F)	1.4 C (2.5 F)	11 years	13 of 100 (Routine)
19 September 2013	Mornington Island, AU	daily high min	23.5 C (74.3 F)	0.1 C (0.2 F)	30 years	13 of 100 (Routine)
17 September 2013	Mornington Island, AU	daily high min	24.9 C (76.8 F)	0.4 C (0.7 F)	28 years	13 of 100 (Routine)
20 August 2013	Mornington Island, AU	daily high min	21.2 C (70.2 F)	0.1 C (0.2 F)	3 years	4 of 100 (Routine)
9 July 2013	Mornington Island, AU	daily high min (Tie)	20.6 C (69.1 F)	tie	35 years	3 of 100 (Routine)
1 June 2013	Mornington Island, AU	daily high max (Tie)	30.6 C (87.1 F)	tie	15 years	2 of 100 (Routine)
23 May 2013	Mornington Island, AU	daily high min	24.0 C (75.2 F)	1.3 C (2.3 F)	12 years	11 of 100 (Routine)
20 May 2013	Mornington Island, AU	daily high max	33.9 C (93.0 F)	1.9 C (3.4 F)	23 years	17 of 100 (Routine)
18 March 2013	Mornington Island, AU	daily high min	28.6 C (83.5 F)	0.1 C (0.2 F)	35 years	14 of 100 (Routine)
13 March 2013	Mornington Island, AU	daily high max (Tie)	34.7 C (94.5 F)	tie	11 years	1 of 100 (Routine)
6 March 2013	Mornington Island, AU	daily high min	29.7 C (85.5 F)	1.4 C (2.5 F)	28 years	20 of 100 (Routine)
2 March 2013	Mornington Island, AU	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	22 years	13 of 100 (Routine)
1 March 2013	Mornington Island, AU	monthly high min	30.9 C (87.6 F)	1.1 C (2.0 F)	32 years	29 of 100 (Routine)
1 March 2013	Mornington Island, AU	daily high max	35.8 C (96.4 F)	0.8 C (1.4 F)	24 years	15 of 100 (Routine)
28 February 2013	Mornington Island, AU	daily high min	30.4 C (86.7 F)	0.9 C (1.6 F)	40 years	21 of 100 (Routine)

Climate Trend

23 complete years, 1975 to 2012

One stripe for each of 23 complete years at Mornington Island, 1975 to 2012. Blue stripes are years cooler than the station's own mean of 26.3 C (79.3 F); red stripes are warmer. The coolest year was 1976, at 24.9 C (76.8 F), and the warmest was 2002, at 27.7 C (81.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Mornington Island as warming stripes, 1975 to 2012
Year	Annual mean temperature	Difference from the station mean
1975	25.8 C	-0.49 C
1976	24.9 C	-1.37 C
1977	25.4 C	-0.87 C
1978	25.9 C	-0.37 C
1979	26.1 C	-0.21 C
1980	26.4 C	+0.09 C
1981	26.4 C	+0.16 C
1982	25.3 C	-0.94 C
1983	26.4 C	+0.14 C
1985	25.6 C	-0.64 C
1988	26.8 C	+0.52 C
1989	26.2 C	-0.08 C
1990	26.6 C	+0.31 C
2002	27.7 C	+1.41 C
2003	26.6 C	+0.37 C
2004	26.5 C	+0.27 C
2005	27.2 C	+0.97 C
2006	26.2 C	-0.09 C
2007	26.4 C	+0.13 C
2009	26.7 C	+0.41 C
2010	27.0 C	+0.78 C
2011	25.7 C	-0.55 C
2012	26.2 C	-0.05 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1914 to 2013

Yearly extremes at Mornington Island: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.8 C (103.6 F)	2012	37.6 C (99.7 F)	42
Coldest night (TNn)	5.1 C (41.2 F)	1974	10.1 C (50.1 F)	42
Wettest day (Rx1day)	477.2 mm (18.8 in)	2011	118.1 mm (4.6 in)	94
Wettest five days (Rx5day)	829.9 mm (32.7 in)	1967	258.9 mm (10.2 in)	94
Longest dry spell (CDD)	246 days	1949	120 days	94

Hottest day (TXx)

The hottest day of the year at Mornington Island, 1914 to 2013. The record is 39.8 C (103.6 F) in 2012, marked on the chart; the median year is 37.6 C (99.7 F).

Hottest day (TXx) at Mornington Island by year
Year	Hottest day (TXx)
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	37.7 C (99.9 F)
1973	36.1 C (97.0 F)
1974	37.7 C (99.9 F)
1975	35.5 C (95.9 F)
1976	36.8 C (98.2 F)
1977	37.5 C (99.5 F)
1978	36.4 C (97.5 F)
1979	37.5 C (99.5 F)
1980	36.8 C (98.2 F)
1981	36.5 C (97.7 F)
1982	36.0 C (96.8 F)
1983	37.5 C (99.5 F)
1984	37.2 C (99.0 F)
1985	37.5 C (99.5 F)
1986	37.7 C (99.9 F)
1987	37.0 C (98.6 F)
1988	39.0 C (102.2 F)
1989	39.0 C (102.2 F)
1990	39.0 C (102.2 F)
1991	35.3 C (95.5 F)
1992	37.7 C (99.9 F)
1993	34.5 C (94.1 F)
1994	39.0 C (102.2 F)
1995	37.7 C (99.9 F)
1996	37.7 C (99.9 F)
1997	37.5 C (99.5 F)
1998	37.7 C (99.9 F)
1999	37.1 C (98.8 F)
2000	36.8 C (98.2 F)
2001	38.5 C (101.3 F)
2002	38.0 C (100.4 F)
2003	38.1 C (100.6 F)
2004	39.6 C (103.3 F)
2005	38.0 C (100.4 F)
2006	38.8 C (101.8 F)
2007	38.7 C (101.7 F)
2008	37.9 C (100.2 F)
2009	37.3 C (99.1 F)
2010	37.2 C (99.0 F)
2011	37.3 C (99.1 F)
2012	39.8 C (103.6 F)
2013	38.1 C (100.6 F)

Coldest night (TNn)

The coldest night of the year at Mornington Island, 1914 to 2013. The record is 5.1 C (41.2 F) in 1974, marked on the chart; the median year is 10.1 C (50.1 F).

Coldest night (TNn) at Mornington Island by year
Year	Coldest night (TNn)
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	18.3 C (64.9 F)
1973	18.3 C (64.9 F)
1974	5.1 C (41.2 F)
1975	8.5 C (47.3 F)
1976	9.0 C (48.2 F)
1977	9.5 C (49.1 F)
1978	8.0 C (46.4 F)
1979	8.1 C (46.6 F)
1980	11.6 C (52.9 F)
1981	10.0 C (50.0 F)
1982	10.3 C (50.5 F)
1983	10.5 C (50.9 F)
1984	8.2 C (46.8 F)
1985	7.0 C (44.6 F)
1986	7.6 C (45.7 F)
1987	7.2 C (45.0 F)
1988	12.3 C (54.1 F)
1989	10.1 C (50.2 F)
1990	8.5 C (47.3 F)
1991	9.4 C (48.9 F)
1992	8.5 C (47.3 F)
1993	11.7 C (53.1 F)
1994	7.2 C (45.0 F)
1995	11.8 C (53.2 F)
1996	10.6 C (51.1 F)
1997	11.2 C (52.2 F)
1998	12.1 C (53.8 F)
1999	9.6 C (49.3 F)
2000	10.5 C (50.9 F)
2001	13.7 C (56.7 F)
2002	11.2 C (52.2 F)
2003	10.1 C (50.2 F)
2004	9.3 C (48.7 F)
2005	12.2 C (54.0 F)
2006	10.8 C (51.4 F)
2007	9.2 C (48.6 F)
2008	10.8 C (51.4 F)
2009	10.0 C (50.0 F)
2010	13.6 C (56.5 F)
2011	9.8 C (49.6 F)
2012	9.5 C (49.1 F)
2013	11.9 C (53.4 F)

Wettest day (Rx1day)

The wettest day of the year at Mornington Island, 1914 to 2013. The record is 477.2 mm (18.8 in) in 2011, marked on the chart; the median year is 118.1 mm (4.6 in).

Wettest day (Rx1day) at Mornington Island by year
Year	Wettest day (Rx1day)
1914	60.7 mm (2.4 in)
1915	86.4 mm (3.4 in)
1916	161.5 mm (6.4 in)
1917	50.0 mm (2.0 in)
1918	125.2 mm (4.9 in)
1919	377.2 mm (14.9 in)
1920	189.5 mm (7.5 in)
1921	154.9 mm (6.1 in)
1922	135.4 mm (5.3 in)
1923	44.2 mm (1.7 in)
1924	107.2 mm (4.2 in)
1925	142.0 mm (5.6 in)
1926	79.8 mm (3.1 in)
1927	99.6 mm (3.9 in)
1928	153.9 mm (6.1 in)
1929	91.7 mm (3.6 in)
1930	169.9 mm (6.7 in)
1931	221.5 mm (8.7 in)
1932	134.4 mm (5.3 in)
1933	240.0 mm (9.4 in)
1934	87.6 mm (3.4 in)
1935	229.4 mm (9.0 in)
1936	279.4 mm (11.0 in)
1937	64.0 mm (2.5 in)
1938	100.6 mm (4.0 in)
1939	180.8 mm (7.1 in)
1940	92.5 mm (3.6 in)
1941	82.0 mm (3.2 in)
1942	102.4 mm (4.0 in)
1943	58.7 mm (2.3 in)
1948	76.2 mm (3.0 in)
1949	86.1 mm (3.4 in)
1950	102.1 mm (4.0 in)
1951	38.1 mm (1.5 in)
1952	38.9 mm (1.5 in)
1953	275.8 mm (10.9 in)
1954	203.2 mm (8.0 in)
1955	129.8 mm (5.1 in)
1956	113.0 mm (4.4 in)
1957	157.5 mm (6.2 in)
1958	72.4 mm (2.9 in)
1959	108.0 mm (4.3 in)
1960	88.9 mm (3.5 in)
1961	71.6 mm (2.8 in)
1962	93.2 mm (3.7 in)
1963	161.5 mm (6.4 in)
1964	170.2 mm (6.7 in)
1965	115.8 mm (4.6 in)
1966	85.6 mm (3.4 in)
1967	287.8 mm (11.3 in)
1968	115.6 mm (4.6 in)
1969	121.4 mm (4.8 in)
1970	362.0 mm (14.3 in)
1971	124.2 mm (4.9 in)
1972	211.1 mm (8.3 in)
1973	255.5 mm (10.1 in)
1974	118.6 mm (4.7 in)
1975	108.9 mm (4.3 in)
1976	180.0 mm (7.1 in)
1977	96.0 mm (3.8 in)
1978	82.8 mm (3.3 in)
1979	160.2 mm (6.3 in)
1980	134.7 mm (5.3 in)
1981	121.4 mm (4.8 in)
1982	79.8 mm (3.1 in)
1983	205.2 mm (8.1 in)
1984	96.6 mm (3.8 in)
1985	117.6 mm (4.6 in)
1986	163.8 mm (6.4 in)
1987	209.2 mm (8.2 in)
1988	88.8 mm (3.5 in)
1989	119.4 mm (4.7 in)
1990	258.8 mm (10.2 in)
1991	62.2 mm (2.4 in)
1992	n/a
1993	n/a
1994	50.0 mm (2.0 in)
1995	74.0 mm (2.9 in)
1996	59.0 mm (2.3 in)
1997	24.0 mm (0.9 in)
1998	66.0 mm (2.6 in)
1999	87.0 mm (3.4 in)
2000	61.0 mm (2.4 in)
2001	212.0 mm (8.3 in)
2002	335.0 mm (13.2 in)
2003	298.0 mm (11.7 in)
2004	108.8 mm (4.3 in)
2005	180.2 mm (7.1 in)
2006	183.4 mm (7.2 in)
2007	181.0 mm (7.1 in)
2008	105.0 mm (4.1 in)
2009	140.2 mm (5.5 in)
2010	169.8 mm (6.7 in)
2011	477.2 mm (18.8 in)
2012	124.6 mm (4.9 in)
2013	100.6 mm (4.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mornington Island, 1914 to 2013. The record is 829.9 mm (32.7 in) in 1967, marked on the chart; the median year is 258.9 mm (10.2 in).

Wettest five days (Rx5day) at Mornington Island by year
Year	Wettest five days (Rx5day)
1914	112.8 mm (4.4 in)
1915	146.9 mm (5.8 in)
1916	341.3 mm (13.4 in)
1917	150.8 mm (5.9 in)
1918	239.5 mm (9.4 in)
1919	496.8 mm (19.6 in)
1920	433.9 mm (17.1 in)
1921	302.0 mm (11.9 in)
1922	283.5 mm (11.2 in)
1923	86.9 mm (3.4 in)
1924	223.0 mm (8.8 in)
1925	346.9 mm (13.7 in)
1926	130.6 mm (5.1 in)
1927	267.8 mm (10.5 in)
1928	427.6 mm (16.8 in)
1929	193.7 mm (7.6 in)
1930	309.6 mm (12.2 in)
1931	334.8 mm (13.2 in)
1932	376.8 mm (14.8 in)
1933	481.5 mm (19.0 in)
1934	213.4 mm (8.4 in)
1935	448.1 mm (17.6 in)
1936	461.0 mm (18.1 in)
1937	188.8 mm (7.4 in)
1938	199.7 mm (7.9 in)
1939	460.5 mm (18.1 in)
1940	365.0 mm (14.4 in)
1941	251.0 mm (9.9 in)
1942	219.5 mm (8.6 in)
1943	96.8 mm (3.8 in)
1948	99.8 mm (3.9 in)
1949	250.8 mm (9.9 in)
1950	270.5 mm (10.6 in)
1951	38.1 mm (1.5 in)
1952	60.8 mm (2.4 in)
1953	455.7 mm (17.9 in)
1954	358.6 mm (14.1 in)
1955	200.6 mm (7.9 in)
1956	230.9 mm (9.1 in)
1957	331.7 mm (13.1 in)
1958	118.6 mm (4.7 in)
1959	192.9 mm (7.6 in)
1960	176.8 mm (7.0 in)
1961	73.2 mm (2.9 in)
1962	183.8 mm (7.2 in)
1963	230.9 mm (9.1 in)
1964	369.9 mm (14.6 in)
1965	391.1 mm (15.4 in)
1966	159.0 mm (6.3 in)
1967	829.9 mm (32.7 in)
1968	247.1 mm (9.7 in)
1969	155.4 mm (6.1 in)
1970	623.6 mm (24.6 in)
1971	277.1 mm (10.9 in)
1972	476.6 mm (18.8 in)
1973	457.4 mm (18.0 in)
1974	301.8 mm (11.9 in)
1975	317.0 mm (12.5 in)
1976	526.8 mm (20.7 in)
1977	283.4 mm (11.2 in)
1978	140.0 mm (5.5 in)
1979	310.5 mm (12.2 in)
1980	252.9 mm (10.0 in)
1981	426.8 mm (16.8 in)
1982	193.0 mm (7.6 in)
1983	463.0 mm (18.2 in)
1984	165.8 mm (6.5 in)
1985	310.6 mm (12.2 in)
1986	300.0 mm (11.8 in)
1987	264.8 mm (10.4 in)
1988	152.7 mm (6.0 in)
1989	216.2 mm (8.5 in)
1990	349.8 mm (13.8 in)
1991	163.0 mm (6.4 in)
1992	n/a
1993	n/a
1994	70.0 mm (2.8 in)
1995	157.2 mm (6.2 in)
1996	98.0 mm (3.9 in)
1997	13.0 mm (0.5 in)
1998	168.0 mm (6.6 in)
1999	170.0 mm (6.7 in)
2000	97.0 mm (3.8 in)
2001	399.0 mm (15.7 in)
2002	473.0 mm (18.6 in)
2003	571.0 mm (22.5 in)
2004	226.8 mm (8.9 in)
2005	319.4 mm (12.6 in)
2006	476.2 mm (18.7 in)
2007	497.4 mm (19.6 in)
2008	167.6 mm (6.6 in)
2009	312.4 mm (12.3 in)
2010	292.8 mm (11.5 in)
2011	793.8 mm (31.3 in)
2012	223.6 mm (8.8 in)
2013	245.2 mm (9.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mornington Island, 1914 to 2013. The record is 246 days in 1949, marked on the chart; the median year is 120 days.

Longest dry spell (CDD) at Mornington Island by year
Year	Longest dry spell (CDD)
1914	21 days
1915	181 days
1916	74 days
1917	126 days
1918	106 days
1919	121 days
1920	145 days
1921	110 days
1922	200 days
1923	161 days
1924	71 days
1925	216 days
1926	131 days
1927	114 days
1928	193 days
1929	220 days
1930	105 days
1931	106 days
1932	161 days
1933	124 days
1934	180 days
1935	57 days
1936	109 days
1937	228 days
1938	107 days
1939	122 days
1940	204 days
1941	143 days
1942	158 days
1943	117 days
1948	9 days
1949	246 days
1950	16 days
1951	241 days
1952	10 days
1953	179 days
1954	111 days
1955	121 days
1956	60 days
1957	180 days
1958	144 days
1959	149 days
1960	184 days
1961	189 days
1962	105 days
1963	175 days
1964	179 days
1965	120 days
1966	164 days
1967	145 days
1968	113 days
1969	114 days
1970	205 days
1971	151 days
1972	102 days
1973	66 days
1974	90 days
1975	117 days
1976	230 days
1977	174 days
1978	104 days
1979	96 days
1980	154 days
1981	93 days
1982	125 days
1983	149 days
1984	209 days
1985	109 days
1986	76 days
1987	140 days
1988	192 days
1989	126 days
1990	151 days
1991	56 days
1992	n/a
1993	n/a
1994	28 days
1995	37 days
1996	25 days
1997	41 days
1998	54 days
1999	62 days
2000	120 days
2001	39 days
2002	66 days
2003	60 days
2004	194 days
2005	55 days
2006	84 days
2007	101 days
2008	51 days
2009	104 days
2010	104 days
2011	134 days
2012	84 days
2013	138 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

76 years, 1915 to 2012

A day with at least 135.2 mm (5.3 in) of rain is expected about once in 2 years. A day with at least 479.5 mm (18.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Mornington Island: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	135.2 mm (5.3 in)
5 years	201.6 mm (7.9 in)
10 years	254.3 mm (10.0 in)
25 years	333.0 mm (13.1 in)
50 years	401.5 mm (15.8 in)
100 years	479.5 mm (18.9 in)	Longer than the 76 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 76 years of values from 1915 to 2012.

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: 477.2 mm (18.8 in) in 2011; 377.2 mm (14.9 in) in 1919; 362.0 mm (14.3 in) in 1970.

Download the Data

Data for Mornington Island standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mornington Island 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).