Boyup Brook Weather Records (ASN00009504)

Record envelope, standing records and threshold days for Boyup Brook (ASN00009504), Australia, with 109 years of record.

Key Facts for Boyup Brook

Boyup Brook (ASN00009504) is a weather station in Australia at -33.83 latitude and 116.39 longitude, 200 m (656 ft) above sea level.
The station reports from 1913 to 2021, 109 years of record.
1,464 records set at Boyup Brook still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Boyup Brook set a daily record precipitation of 64.5 mm (2.5 in) on 8 February 2021.

About the Station

Location: Australia, -33.83 latitude, 116.39 longitude.
Elevation: 200 m (656 ft).
Period of record: 1913 to 2021, 109 years.
Eligible elements: 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 Boyup Brook. 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 Boyup Brook, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	41.9 C (107.4 F)	5.7 C (42.3 F)	n/a	n/a
Feb	43.0 C (109.4 F)	3.4 C (38.1 F)	n/a	n/a
Mar	38.8 C (101.8 F)	0.2 C (32.4 F)	n/a	n/a
Apr	36.1 C (97.0 F)	0.2 C (32.4 F)	n/a	n/a
May	31.3 C (88.3 F)	-2.0 C (28.4 F)	n/a	n/a
Jun	24.7 C (76.5 F)	-3.4 C (25.9 F)	n/a	n/a
Jul	21.2 C (70.2 F)	-3.0 C (26.6 F)	n/a	n/a
Aug	22.2 C (72.0 F)	-2.2 C (28.0 F)	n/a	n/a
Sep	25.5 C (77.9 F)	-1.9 C (28.6 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-0.5 C (31.1 F)	n/a	n/a
Nov	36.4 C (97.5 F)	0.7 C (33.3 F)	n/a	n/a
Dec	41.0 C (105.8 F)	1.3 C (34.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Boyup Brook still stand. 1972 holds the most, with 254.

All-Time Record Progression

1 new records

1 all-time records were set at Boyup Brook between 22 January 1982 and 22 January 1982. Each dot is a new record.

Wettest Day of Each Month

Jan: 109.0 mm (4.3 in)

The wettest day on record for each calendar month at Boyup Brook. The most was 109.0 mm (4.3 in) on 22 January 1982.

Record daily precipitation for each month at Boyup Brook
Month	Record daily precipitation (mm)	Date
Jan	109.0 mm (4.3 in)	22 January 1982
Feb	70.0 mm (2.8 in)	18 February 1978
Mar	73.2 mm (2.9 in)	28 March 1960
Apr	94.0 mm (3.7 in)	19 April 1928
May	69.3 mm (2.7 in)	13 May 1938
Jun	78.2 mm (3.1 in)	18 June 1962
Jul	58.2 mm (2.3 in)	27 July 1964
Aug	56.9 mm (2.2 in)	4 August 1964
Sep	43.9 mm (1.7 in)	28 September 1948
Oct	47.8 mm (1.9 in)	19 October 1935
Nov	53.1 mm (2.1 in)	4 November 1965
Dec	74.6 mm (2.9 in)	27 December 1995

Period of Record Coverage

1968 to 1975

8 years of record at Boyup Brook, 1968 to 1975. 3 years have data for under 90 percent of days and are left out of rankings: 1968, 1974, 1975.

Latest Records

Latest records at Boyup Brook
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 February 2021	Boyup Brook, AU	daily rain	64.5 mm (2.5 in)	53.3 mm (2.1 in)	92 years	77 of 100 (Major)
8 October 2020	Boyup Brook, AU	daily rain	17.8 mm (0.7 in)	1.4 mm (0.06 in)	21 years	18 of 100 (Routine)
25 May 2020	Boyup Brook, AU	daily rain	26.0 mm (1.0 in)	1.0 mm (0.04 in)	2 years	11 of 100 (Routine)
16 March 2020	Boyup Brook, AU	daily rain	18.8 mm (0.7 in)	3.1 mm (0.12 in)	78 years	20 of 100 (Routine)
28 February 2020	Boyup Brook, AU	daily rain	7.0 mm (0.28 in)	2.6 mm (0.10 in)	30 years	20 of 100 (Routine)
2 September 2019	Boyup Brook, AU	daily rain	31.2 mm (1.2 in)	11.4 mm (0.4 in)	56 years	47 of 100 (Notable)
30 August 2019	Boyup Brook, AU	daily rain	26.2 mm (1.0 in)	3.8 mm (0.15 in)	98 years	44 of 100 (Notable)
24 June 2019	Boyup Brook, AU	daily rain	46.4 mm (1.8 in)	24.6 mm (1.0 in)	66 years	58 of 100 (Notable)
8 March 2019	Boyup Brook, AU	daily rain	29.8 mm (1.2 in)	17.6 mm (0.7 in)	76 years	49 of 100 (Notable)
24 January 2019	Boyup Brook, AU	daily rain	12.0 mm (0.5 in)	8.2 mm (0.32 in)	80 years	20 of 100 (Routine)
23 July 2018	Boyup Brook, AU	daily rain	35.0 mm (1.4 in)	12.4 mm (0.5 in)	99 years	55 of 100 (Notable)
11 June 2018	Boyup Brook, AU	daily rain	46.0 mm (1.8 in)	12.0 mm (0.5 in)	13 years	28 of 100 (Routine)
25 May 2018	Boyup Brook, AU	daily rain	25.0 mm (1.0 in)	4.4 mm (0.17 in)	44 years	28 of 100 (Routine)
17 January 2018	Boyup Brook, AU	daily rain	5.2 mm (0.20 in)	0.4 mm (0.02 in)	84 years	20 of 100 (Routine)
16 January 2018	Boyup Brook, AU	daily rain	41.0 mm (1.6 in)	34.9 mm (1.4 in)	84 years	70 of 100 (Major)
12 December 2017	Boyup Brook, AU	daily rain	33.0 mm (1.3 in)	19.8 mm (0.8 in)	20 years	46 of 100 (Notable)
22 September 2017	Boyup Brook, AU	daily rain	27.0 mm (1.1 in)	5.8 mm (0.23 in)	20 years	26 of 100 (Routine)
14 August 2017	Boyup Brook, AU	daily rain	43.2 mm (1.7 in)	22.6 mm (0.9 in)	56 years	59 of 100 (Notable)
10 February 2017	Boyup Brook, AU	daily rain	38.0 mm (1.5 in)	25.3 mm (1.0 in)	100 years	67 of 100 (Major)
26 April 2016	Boyup Brook, AU	daily rain	15.6 mm (0.6 in)	2.9 mm (0.11 in)	73 years	20 of 100 (Routine)

Extremes by Year

1913 to 2021

Yearly extremes at Boyup Brook: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.0 C (109.4 F)	1975	41.4 C (106.4 F)	8
Coldest night (TNn)	-3.4 C (25.9 F)	1973	-2.3 C (27.9 F)	8
Wettest day (Rx1day)	109.0 mm (4.3 in)	1982	37.0 mm (1.5 in)	109
Wettest five days (Rx5day)	148.3 mm (5.8 in)	1982	62.8 mm (2.5 in)	109
Longest dry spell (CDD)	90 days	2001	39 days	109

Hottest day (TXx)

The hottest day of the year at Boyup Brook, 1913 to 2021. The record is 43.0 C (109.4 F) in 1975, marked on the chart; the median year is 41.4 C (106.4 F).

Hottest day (TXx) at Boyup Brook by year
Year	Hottest day (TXx)
1913	n/a
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
1944	n/a
1945	n/a
1946	n/a
1947	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	41.0 C (105.8 F)
1969	41.9 C (107.4 F)
1970	38.4 C (101.1 F)
1971	41.7 C (107.1 F)
1972	41.0 C (105.8 F)
1973	39.9 C (103.8 F)
1974	41.7 C (107.1 F)
1975	43.0 C (109.4 F)
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a

Coldest night (TNn)

The coldest night of the year at Boyup Brook, 1913 to 2021. The record is -3.4 C (25.9 F) in 1973, marked on the chart; the median year is -2.3 C (27.9 F).

Coldest night (TNn) at Boyup Brook by year
Year	Coldest night (TNn)
1913	n/a
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
1944	n/a
1945	n/a
1946	n/a
1947	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	3.9 C (39.0 F)
1969	-2.4 C (27.7 F)
1970	-2.6 C (27.3 F)
1971	-3.0 C (26.6 F)
1972	-2.2 C (28.0 F)
1973	-3.4 C (25.9 F)
1974	-1.6 C (29.1 F)
1975	-1.8 C (28.8 F)
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a

Wettest day (Rx1day)

The wettest day of the year at Boyup Brook, 1913 to 2021. The record is 109.0 mm (4.3 in) in 1982, marked on the chart; the median year is 37.0 mm (1.5 in).

Wettest day (Rx1day) at Boyup Brook by year
Year	Wettest day (Rx1day)
1913	16.0 mm (0.6 in)
1914	36.6 mm (1.4 in)
1915	46.2 mm (1.8 in)
1916	20.8 mm (0.8 in)
1917	46.0 mm (1.8 in)
1918	31.2 mm (1.2 in)
1919	44.5 mm (1.8 in)
1920	33.5 mm (1.3 in)
1921	34.3 mm (1.4 in)
1922	36.6 mm (1.4 in)
1923	35.6 mm (1.4 in)
1924	35.8 mm (1.4 in)
1925	24.4 mm (1.0 in)
1926	34.8 mm (1.4 in)
1927	54.1 mm (2.1 in)
1928	94.0 mm (3.7 in)
1929	30.5 mm (1.2 in)
1930	49.0 mm (1.9 in)
1931	36.3 mm (1.4 in)
1932	46.7 mm (1.8 in)
1933	37.6 mm (1.5 in)
1934	35.8 mm (1.4 in)
1935	47.8 mm (1.9 in)
1936	44.5 mm (1.8 in)
1937	47.0 mm (1.9 in)
1938	69.3 mm (2.7 in)
1939	31.8 mm (1.3 in)
1940	29.0 mm (1.1 in)
1941	58.4 mm (2.3 in)
1942	34.5 mm (1.4 in)
1943	38.1 mm (1.5 in)
1944	29.7 mm (1.2 in)
1945	35.3 mm (1.4 in)
1946	30.7 mm (1.2 in)
1947	66.5 mm (2.6 in)
1948	43.9 mm (1.7 in)
1949	28.7 mm (1.1 in)
1950	41.9 mm (1.6 in)
1951	38.9 mm (1.5 in)
1952	38.1 mm (1.5 in)
1953	35.6 mm (1.4 in)
1954	32.8 mm (1.3 in)
1955	59.9 mm (2.4 in)
1956	71.1 mm (2.8 in)
1957	66.5 mm (2.6 in)
1958	36.8 mm (1.4 in)
1959	33.0 mm (1.3 in)
1960	73.2 mm (2.9 in)
1961	54.9 mm (2.2 in)
1962	78.2 mm (3.1 in)
1963	50.0 mm (2.0 in)
1964	58.2 mm (2.3 in)
1965	53.1 mm (2.1 in)
1966	36.3 mm (1.4 in)
1967	43.9 mm (1.7 in)
1968	36.8 mm (1.4 in)
1969	43.9 mm (1.7 in)
1970	32.0 mm (1.3 in)
1971	43.2 mm (1.7 in)
1972	21.8 mm (0.9 in)
1973	30.7 mm (1.2 in)
1974	27.8 mm (1.1 in)
1975	29.4 mm (1.2 in)
1976	53.4 mm (2.1 in)
1977	33.2 mm (1.3 in)
1978	70.0 mm (2.8 in)
1979	15.8 mm (0.6 in)
1980	27.4 mm (1.1 in)
1981	36.2 mm (1.4 in)
1982	109.0 mm (4.3 in)
1983	48.6 mm (1.9 in)
1984	26.0 mm (1.0 in)
1985	46.7 mm (1.8 in)
1986	36.8 mm (1.4 in)
1987	34.0 mm (1.3 in)
1988	39.0 mm (1.5 in)
1989	40.4 mm (1.6 in)
1990	19.2 mm (0.8 in)
1991	38.0 mm (1.5 in)
1992	37.0 mm (1.5 in)
1993	65.0 mm (2.6 in)
1994	31.6 mm (1.2 in)
1995	74.6 mm (2.9 in)
1996	30.6 mm (1.2 in)
1997	38.2 mm (1.5 in)
1998	37.6 mm (1.5 in)
1999	34.4 mm (1.4 in)
2000	31.6 mm (1.2 in)
2001	35.2 mm (1.4 in)
2002	47.8 mm (1.9 in)
2003	35.2 mm (1.4 in)
2004	34.0 mm (1.3 in)
2005	60.6 mm (2.4 in)
2006	29.8 mm (1.2 in)
2007	17.0 mm (0.7 in)
2008	48.4 mm (1.9 in)
2009	28.4 mm (1.1 in)
2010	37.0 mm (1.5 in)
2011	40.0 mm (1.6 in)
2012	27.0 mm (1.1 in)
2013	30.2 mm (1.2 in)
2014	34.4 mm (1.4 in)
2015	69.0 mm (2.7 in)
2016	50.0 mm (2.0 in)
2017	43.2 mm (1.7 in)
2018	46.0 mm (1.8 in)
2019	46.4 mm (1.8 in)
2020	26.0 mm (1.0 in)
2021	64.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Boyup Brook, 1913 to 2021. The record is 148.3 mm (5.8 in) in 1982, marked on the chart; the median year is 62.8 mm (2.5 in).

Wettest five days (Rx5day) at Boyup Brook by year
Year	Wettest five days (Rx5day)
1913	28.0 mm (1.1 in)
1914	47.8 mm (1.9 in)
1915	63.5 mm (2.5 in)
1916	46.4 mm (1.8 in)
1917	122.5 mm (4.8 in)
1918	58.2 mm (2.3 in)
1919	74.5 mm (2.9 in)
1920	65.7 mm (2.6 in)
1921	49.4 mm (1.9 in)
1922	83.6 mm (3.3 in)
1923	69.6 mm (2.7 in)
1924	68.9 mm (2.7 in)
1925	55.1 mm (2.2 in)
1926	84.1 mm (3.3 in)
1927	55.4 mm (2.2 in)
1928	102.4 mm (4.0 in)
1929	60.4 mm (2.4 in)
1930	86.6 mm (3.4 in)
1931	74.1 mm (2.9 in)
1932	68.3 mm (2.7 in)
1933	88.2 mm (3.5 in)
1934	62.7 mm (2.5 in)
1935	61.1 mm (2.4 in)
1936	62.8 mm (2.5 in)
1937	68.1 mm (2.7 in)
1938	103.6 mm (4.1 in)
1939	74.7 mm (2.9 in)
1940	46.0 mm (1.8 in)
1941	64.3 mm (2.5 in)
1942	62.9 mm (2.5 in)
1943	57.8 mm (2.3 in)
1944	49.0 mm (1.9 in)
1945	62.4 mm (2.5 in)
1946	85.6 mm (3.4 in)
1947	123.6 mm (4.9 in)
1948	54.8 mm (2.2 in)
1949	59.9 mm (2.4 in)
1950	87.2 mm (3.4 in)
1951	70.4 mm (2.8 in)
1952	63.3 mm (2.5 in)
1953	52.8 mm (2.1 in)
1954	59.2 mm (2.3 in)
1955	121.3 mm (4.8 in)
1956	71.1 mm (2.8 in)
1957	71.1 mm (2.8 in)
1958	91.3 mm (3.6 in)
1959	76.3 mm (3.0 in)
1960	84.3 mm (3.3 in)
1961	100.8 mm (4.0 in)
1962	97.6 mm (3.8 in)
1963	120.8 mm (4.8 in)
1964	113.0 mm (4.4 in)
1965	82.1 mm (3.2 in)
1966	60.8 mm (2.4 in)
1967	57.7 mm (2.3 in)
1968	70.6 mm (2.8 in)
1969	61.4 mm (2.4 in)
1970	52.6 mm (2.1 in)
1971	77.2 mm (3.0 in)
1972	58.2 mm (2.3 in)
1973	62.2 mm (2.4 in)
1974	60.2 mm (2.4 in)
1975	42.6 mm (1.7 in)
1976	68.2 mm (2.7 in)
1977	35.6 mm (1.4 in)
1978	71.0 mm (2.8 in)
1979	16.6 mm (0.7 in)
1980	36.7 mm (1.4 in)
1981	57.8 mm (2.3 in)
1982	148.3 mm (5.8 in)
1983	86.6 mm (3.4 in)
1984	53.4 mm (2.1 in)
1985	53.0 mm (2.1 in)
1986	52.2 mm (2.1 in)
1987	41.6 mm (1.6 in)
1988	65.6 mm (2.6 in)
1989	32.2 mm (1.3 in)
1990	32.6 mm (1.3 in)
1991	56.0 mm (2.2 in)
1992	53.6 mm (2.1 in)
1993	76.0 mm (3.0 in)
1994	33.2 mm (1.3 in)
1995	80.8 mm (3.2 in)
1996	47.2 mm (1.9 in)
1997	39.2 mm (1.5 in)
1998	74.0 mm (2.9 in)
1999	61.4 mm (2.4 in)
2000	40.0 mm (1.6 in)
2001	73.8 mm (2.9 in)
2002	68.6 mm (2.7 in)
2003	57.8 mm (2.3 in)
2004	26.1 mm (1.0 in)
2005	101.6 mm (4.0 in)
2006	41.0 mm (1.6 in)
2007	28.6 mm (1.1 in)
2008	48.4 mm (1.9 in)
2009	45.4 mm (1.8 in)
2010	25.8 mm (1.0 in)
2011	78.0 mm (3.1 in)
2012	64.0 mm (2.5 in)
2013	60.3 mm (2.4 in)
2014	85.8 mm (3.4 in)
2015	85.0 mm (3.3 in)
2016	63.5 mm (2.5 in)
2017	58.8 mm (2.3 in)
2018	55.0 mm (2.2 in)
2019	64.2 mm (2.5 in)
2020	49.3 mm (1.9 in)
2021	66.0 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Boyup Brook, 1913 to 2021. The record is 90 days in 2001, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Boyup Brook by year
Year	Longest dry spell (CDD)
1913	13 days
1914	36 days
1915	28 days
1916	32 days
1917	51 days
1918	30 days
1919	52 days
1920	52 days
1921	26 days
1922	31 days
1923	63 days
1924	38 days
1925	24 days
1926	44 days
1927	28 days
1928	46 days
1929	38 days
1930	56 days
1931	42 days
1932	33 days
1933	47 days
1934	21 days
1935	23 days
1936	51 days
1937	41 days
1938	55 days
1939	32 days
1940	30 days
1941	51 days
1942	51 days
1943	47 days
1944	74 days
1945	43 days
1946	29 days
1947	43 days
1948	89 days
1949	40 days
1950	51 days
1951	35 days
1952	43 days
1953	55 days
1954	35 days
1955	24 days
1956	64 days
1957	67 days
1958	24 days
1959	32 days
1960	45 days
1961	33 days
1962	35 days
1963	21 days
1964	58 days
1965	28 days
1966	23 days
1967	27 days
1968	39 days
1969	56 days
1970	28 days
1971	27 days
1972	57 days
1973	46 days
1974	52 days
1975	59 days
1976	42 days
1977	30 days
1978	36 days
1979	27 days
1980	39 days
1981	48 days
1982	41 days
1983	40 days
1984	57 days
1985	27 days
1986	33 days
1987	71 days
1988	43 days
1989	37 days
1990	26 days
1991	46 days
1992	37 days
1993	38 days
1994	68 days
1995	82 days
1996	41 days
1997	24 days
1998	51 days
1999	33 days
2000	34 days
2001	90 days
2002	56 days
2003	39 days
2004	34 days
2005	42 days
2006	28 days
2007	46 days
2008	38 days
2009	58 days
2010	47 days
2011	25 days
2012	32 days
2013	24 days
2014	68 days
2015	25 days
2016	21 days
2017	33 days
2018	47 days
2019	41 days
2020	26 days
2021	33 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

70 years, 1914 to 2019

A day with at least 39.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 93.4 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Boyup Brook: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	39.6 mm (1.6 in)
5 years	51.5 mm (2.0 in)
10 years	60.3 mm (2.4 in)
25 years	72.5 mm (2.9 in)
50 years	82.6 mm (3.3 in)
100 years	93.4 mm (3.7 in)	Longer than the 70 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, 70 years of values from 1914 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: 94.0 mm (3.7 in) in 1928; 78.2 mm (3.1 in) in 1962; 73.2 mm (2.9 in) in 1960.

Download the Data

Data for Boyup Brook standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Boyup Brook 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Year	Days with data	Share of year	Complete
1968	29	8%	No
1969	363	99%	Yes
1970	350	96%	Yes
1971	359	98%	Yes
1972	366	100%	Yes
1973	359	98%	Yes
1974	298	82%	No
1975	278	76%	No