Twolganup Weather Records (ASN00010694)

Record envelope, standing records and threshold days for Twolganup (ASN00010694), Australia, with 65 years of record.

Key Facts for Twolganup

Twolganup (ASN00010694) is a weather station in Australia at -34.00 latitude and 117.92 longitude, 249 m (817 ft) above sea level.
The station reports from 1955 to 2019, 65 years of record.
0 records set at Twolganup still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Twolganup set a daily record precipitation of 10.4 mm (0.4 in) on 23 April 2018.

About the Station

Location: Australia, -34.00 latitude, 117.92 longitude.
Elevation: 249 m (817 ft).
Period of record: 1955 to 2019, 65 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 Twolganup. 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 Twolganup, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Twolganup still stand.

Wettest Day of Each Month

Jan: 116.8 mm (4.6 in)

The wettest day on record for each calendar month at Twolganup. The most was 116.8 mm (4.6 in) on 21 January 1982.

Record daily precipitation for each month at Twolganup
Month	Record daily precipitation (mm)	Date
Jan	116.8 mm (4.6 in)	21 January 1982
Feb	88.9 mm (3.5 in)	18 February 1955
Mar	39.6 mm (1.6 in)	24 March 1988
Apr	48.3 mm (1.9 in)	17 April 1998
May	56.4 mm (2.2 in)	18 May 1997
Jun	49.5 mm (1.9 in)	13 June 1961
Jul	36.5 mm (1.4 in)	20 July 1991
Aug	31.0 mm (1.2 in)	26 August 1962
Sep	47.0 mm (1.9 in)	20 September 1955
Oct	50.2 mm (2.0 in)	20 October 2014
Nov	49.5 mm (1.9 in)	23 November 1971
Dec	48.3 mm (1.9 in)	31 December 1959

Latest Records

Latest records at Twolganup
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 April 2018	Twolganup, AU	daily rain	10.4 mm (0.4 in)	1.0 mm (0.04 in)	16 years	11 of 100 (Routine)
17 January 2018	Twolganup, AU	daily rain	8.0 mm (0.31 in)	4.7 mm (0.19 in)	44 years	20 of 100 (Routine)
29 September 2017	Twolganup, AU	daily rain	9.4 mm (0.37 in)	3.6 mm (0.14 in)	44 years	20 of 100 (Routine)
25 September 2017	Twolganup, AU	daily rain	17.6 mm (0.7 in)	2.6 mm (0.10 in)	52 years	20 of 100 (Routine)
22 March 2017	Twolganup, AU	daily rain	16.4 mm (0.6 in)	8.5 mm (0.33 in)	16 years	20 of 100 (Routine)
13 March 2017	Twolganup, AU	daily rain	13.0 mm (0.5 in)	5.1 mm (0.20 in)	48 years	20 of 100 (Routine)
12 February 2017	Twolganup, AU	daily rain	7.4 mm (0.29 in)	3.6 mm (0.14 in)	37 years	20 of 100 (Routine)
10 February 2017	Twolganup, AU	daily rain	61.8 mm (2.4 in)	21.2 mm (0.8 in)	7 years	26 of 100 (Routine)
8 February 2017	Twolganup, AU	daily rain	5.0 mm (0.20 in)	2.0 mm (0.08 in)	23 years	13 of 100 (Routine)
12 December 2016	Twolganup, AU	daily rain	21.8 mm (0.9 in)	19.8 mm (0.8 in)	4 years	20 of 100 (Routine)
11 November 2016	Twolganup, AU	daily rain	13.8 mm (0.5 in)	1.6 mm (0.06 in)	45 years	20 of 100 (Routine)
27 August 2016	Twolganup, AU	daily rain	9.2 mm (0.36 in)	1.0 mm (0.04 in)	31 years	17 of 100 (Routine)
27 March 2016	Twolganup, AU	daily rain	15.4 mm (0.6 in)	7.0 mm (0.28 in)	56 years	20 of 100 (Routine)
23 March 2016	Twolganup, AU	daily rain	26.8 mm (1.1 in)	1.6 mm (0.06 in)	6 years	9 of 100 (Routine)
20 January 2016	Twolganup, AU	daily rain	13.6 mm (0.5 in)	9.0 mm (0.35 in)	25 years	19 of 100 (Routine)
19 January 2016	Twolganup, AU	daily rain	13.8 mm (0.5 in)	8.2 mm (0.32 in)	30 years	20 of 100 (Routine)
10 January 2016	Twolganup, AU	daily rain	17.0 mm (0.7 in)	6.3 mm (0.25 in)	52 years	20 of 100 (Routine)
5 December 2015	Twolganup, AU	daily rain	23.8 mm (0.9 in)	18.7 mm (0.7 in)	57 years	20 of 100 (Routine)
2 November 2015	Twolganup, AU	daily rain	25.2 mm (1.0 in)	16.3 mm (0.6 in)	30 years	40 of 100 (Notable)
20 August 2015	Twolganup, AU	daily rain	9.6 mm (0.38 in)	4.8 mm (0.19 in)	32 years	20 of 100 (Routine)

Extremes by Year

1955 to 2019

Yearly extremes at Twolganup: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	116.8 mm (4.6 in)	1982	28.0 mm (1.1 in)	65
Wettest five days (Rx5day)	219.5 mm (8.6 in)	1982	44.6 mm (1.8 in)	65
Longest dry spell (CDD)	88 days	2014	41 days	65

Wettest day (Rx1day)

The wettest day of the year at Twolganup, 1955 to 2019. The record is 116.8 mm (4.6 in) in 1982, marked on the chart; the median year is 28.0 mm (1.1 in).

Wettest day (Rx1day) at Twolganup by year
Year	Wettest day (Rx1day)
1955	88.9 mm (3.5 in)
1956	23.9 mm (0.9 in)
1957	23.6 mm (0.9 in)
1958	35.6 mm (1.4 in)
1959	48.3 mm (1.9 in)
1960	18.3 mm (0.7 in)
1961	49.5 mm (1.9 in)
1962	31.0 mm (1.2 in)
1963	26.9 mm (1.1 in)
1964	29.2 mm (1.1 in)
1965	19.1 mm (0.8 in)
1966	41.4 mm (1.6 in)
1967	24.9 mm (1.0 in)
1968	34.0 mm (1.3 in)
1969	31.0 mm (1.2 in)
1970	31.8 mm (1.3 in)
1971	49.5 mm (1.9 in)
1972	16.8 mm (0.7 in)
1973	24.4 mm (1.0 in)
1974	35.3 mm (1.4 in)
1975	22.0 mm (0.9 in)
1976	36.8 mm (1.4 in)
1977	27.5 mm (1.1 in)
1978	25.4 mm (1.0 in)
1979	26.4 mm (1.0 in)
1980	45.7 mm (1.8 in)
1981	23.6 mm (0.9 in)
1982	116.8 mm (4.6 in)
1983	23.4 mm (0.9 in)
1984	26.0 mm (1.0 in)
1985	18.3 mm (0.7 in)
1986	51.3 mm (2.0 in)
1987	17.5 mm (0.7 in)
1988	39.6 mm (1.6 in)
1989	32.2 mm (1.3 in)
1990	73.1 mm (2.9 in)
1991	36.5 mm (1.4 in)
1992	21.3 mm (0.8 in)
1993	33.8 mm (1.3 in)
1994	23.0 mm (0.9 in)
1995	26.0 mm (1.0 in)
1996	28.0 mm (1.1 in)
1997	56.4 mm (2.2 in)
1998	48.3 mm (1.9 in)
1999	35.6 mm (1.4 in)
2000	26.7 mm (1.1 in)
2001	24.6 mm (1.0 in)
2002	26.2 mm (1.0 in)
2003	32.0 mm (1.3 in)
2004	17.6 mm (0.7 in)
2005	37.8 mm (1.5 in)
2006	25.0 mm (1.0 in)
2007	27.4 mm (1.1 in)
2008	28.0 mm (1.1 in)
2009	20.0 mm (0.8 in)
2010	40.6 mm (1.6 in)
2011	40.6 mm (1.6 in)
2012	26.0 mm (1.0 in)
2013	27.0 mm (1.1 in)
2014	50.2 mm (2.0 in)
2015	26.4 mm (1.0 in)
2016	56.6 mm (2.2 in)
2017	61.8 mm (2.4 in)
2018	29.4 mm (1.2 in)
2019	3.0 mm (0.12 in)

Wettest five days (Rx5day)

The wettest five days of the year at Twolganup, 1955 to 2019. The record is 219.5 mm (8.6 in) in 1982, marked on the chart; the median year is 44.6 mm (1.8 in).

Wettest five days (Rx5day) at Twolganup by year
Year	Wettest five days (Rx5day)
1955	166.7 mm (6.6 in)
1956	31.0 mm (1.2 in)
1957	23.6 mm (0.9 in)
1958	44.5 mm (1.8 in)
1959	53.6 mm (2.1 in)
1960	65.5 mm (2.6 in)
1961	54.6 mm (2.1 in)
1962	53.1 mm (2.1 in)
1963	60.5 mm (2.4 in)
1964	58.4 mm (2.3 in)
1965	37.9 mm (1.5 in)
1966	57.9 mm (2.3 in)
1967	43.4 mm (1.7 in)
1968	49.8 mm (2.0 in)
1969	43.7 mm (1.7 in)
1970	49.6 mm (2.0 in)
1971	54.6 mm (2.1 in)
1972	27.9 mm (1.1 in)
1973	31.0 mm (1.2 in)
1974	43.7 mm (1.7 in)
1975	28.6 mm (1.1 in)
1976	52.1 mm (2.1 in)
1977	64.3 mm (2.5 in)
1978	39.6 mm (1.6 in)
1979	30.1 mm (1.2 in)
1980	51.3 mm (2.0 in)
1981	38.1 mm (1.5 in)
1982	219.5 mm (8.6 in)
1983	45.0 mm (1.8 in)
1984	32.0 mm (1.3 in)
1985	36.0 mm (1.4 in)
1986	51.3 mm (2.0 in)
1987	25.9 mm (1.0 in)
1988	87.3 mm (3.4 in)
1989	49.5 mm (1.9 in)
1990	75.5 mm (3.0 in)
1991	71.6 mm (2.8 in)
1992	37.6 mm (1.5 in)
1993	74.5 mm (2.9 in)
1994	40.4 mm (1.6 in)
1995	44.6 mm (1.8 in)
1996	33.8 mm (1.3 in)
1997	63.0 mm (2.5 in)
1998	62.9 mm (2.5 in)
1999	38.4 mm (1.5 in)
2000	36.6 mm (1.4 in)
2001	48.2 mm (1.9 in)
2002	30.8 mm (1.2 in)
2003	46.4 mm (1.8 in)
2004	24.6 mm (1.0 in)
2005	87.4 mm (3.4 in)
2006	31.0 mm (1.2 in)
2007	31.4 mm (1.2 in)
2008	45.2 mm (1.8 in)
2009	36.6 mm (1.4 in)
2010	40.6 mm (1.6 in)
2011	43.2 mm (1.7 in)
2012	28.2 mm (1.1 in)
2013	50.8 mm (2.0 in)
2014	57.4 mm (2.3 in)
2015	43.8 mm (1.7 in)
2016	87.8 mm (3.5 in)
2017	111.2 mm (4.4 in)
2018	34.0 mm (1.3 in)
2019	3.0 mm (0.12 in)

Longest dry spell (CDD)

The longest dry spell of the year at Twolganup, 1955 to 2019. The record is 88 days in 2014, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Twolganup by year
Year	Longest dry spell (CDD)
1955	42 days
1956	59 days
1957	82 days
1958	60 days
1959	26 days
1960	40 days
1961	59 days
1962	48 days
1963	40 days
1964	62 days
1965	42 days
1966	60 days
1967	38 days
1968	41 days
1969	58 days
1970	37 days
1971	48 days
1972	72 days
1973	80 days
1974	37 days
1975	67 days
1976	43 days
1977	33 days
1978	37 days
1979	48 days
1980	38 days
1981	43 days
1982	41 days
1983	30 days
1984	51 days
1985	24 days
1986	52 days
1987	75 days
1988	70 days
1989	32 days
1990	26 days
1991	54 days
1992	21 days
1993	28 days
1994	66 days
1995	33 days
1996	64 days
1997	35 days
1998	44 days
1999	25 days
2000	41 days
2001	58 days
2002	34 days
2003	38 days
2004	31 days
2005	42 days
2006	32 days
2007	55 days
2008	70 days
2009	41 days
2010	31 days
2011	19 days
2012	45 days
2013	53 days
2014	88 days
2015	28 days
2016	28 days
2017	38 days
2018	38 days
2019	22 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

64 years, 1955 to 2018

A day with at least 29.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 107.2 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Twolganup: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.8 mm (1.2 in)
5 years	42.2 mm (1.7 in)
10 years	53.1 mm (2.1 in)
25 years	70.6 mm (2.8 in)
50 years	87.1 mm (3.4 in)
100 years	107.2 mm (4.2 in)	Longer than the 64 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, 64 years of values from 1955 to 2018.

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: 116.8 mm (4.6 in) in 1982; 88.9 mm (3.5 in) in 1955; 73.1 mm (2.9 in) in 1990.

Download the Data

Data for Twolganup standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Twolganup 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a