Yanchep Weather Records (ASN00009045)

Record envelope, standing records and threshold days for Yanchep (ASN00009045), Australia, with 67 years of record.

Key Facts for Yanchep

Yanchep (ASN00009045) is a weather station in Australia at -31.56 latitude and 115.67 longitude, 20 m (66 ft) above sea level.
The station reports from 1934 to 2000, 67 years of record.
0 records set at Yanchep still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Yanchep set a daily record precipitation of 4.6 mm (0.18 in) on 27 November 2000.

About the Station

Location: Australia, -31.56 latitude, 115.67 longitude.
Elevation: 20 m (66 ft).
Period of record: 1934 to 2000, 67 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 Yanchep. 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 Yanchep, 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 Yanchep still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Yanchep between 26 June 1967 and 3 May 1993. Each dot is a new record.

When Yanchep set new all-time records
Date	Kind	Detail
1967-06-26	Record daily precipitation	Record daily precipitation 94.7 mm (3.7 in)
1993-05-03	Record daily precipitation	Record daily precipitation 103.6 mm (4.1 in)

Wettest Day of Each Month

May: 103.6 mm (4.1 in)

The wettest day on record for each calendar month at Yanchep. The most was 103.6 mm (4.1 in) on 3 May 1993.

Record daily precipitation for each month at Yanchep
Month	Record daily precipitation (mm)	Date
Jan	76.8 mm (3.0 in)	29 January 1990
Feb	91.0 mm (3.6 in)	9 February 1992
Mar	44.7 mm (1.8 in)	18 March 1971
Apr	66.0 mm (2.6 in)	10 April 1955
May	103.6 mm (4.1 in)	3 May 1993
Jun	94.7 mm (3.7 in)	26 June 1967
Jul	88.2 mm (3.5 in)	29 July 1987
Aug	47.5 mm (1.9 in)	23 August 1943
Sep	49.0 mm (1.9 in)	14 September 1947
Oct	60.7 mm (2.4 in)	13 October 1985
Nov	37.3 mm (1.5 in)	13 November 1946
Dec	40.0 mm (1.6 in)	25 December 1991

Latest Records

Latest records at Yanchep
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 November 2000	Yanchep, AU	daily rain	4.6 mm (0.18 in)	2.0 mm (0.08 in)	5 years	9 of 100 (Routine)
12 May 2000	Yanchep, AU	daily rain	36.8 mm (1.4 in)	13.4 mm (0.5 in)	44 years	31 of 100 (Routine)
28 April 2000	Yanchep, AU	daily rain	17.4 mm (0.7 in)	2.2 mm (0.09 in)	12 years	11 of 100 (Routine)
22 March 2000	Yanchep, AU	daily rain	21.2 mm (0.8 in)	14.2 mm (0.6 in)	25 years	20 of 100 (Routine)
16 January 2000	Yanchep, AU	daily rain	4.6 mm (0.18 in)	3.1 mm (0.12 in)	61 years	20 of 100 (Routine)
20 December 1999	Yanchep, AU	daily rain	7.1 mm (0.28 in)	3.3 mm (0.13 in)	45 years	20 of 100 (Routine)
8 October 1999	Yanchep, AU	daily rain	21.5 mm (0.8 in)	9.1 mm (0.36 in)	26 years	20 of 100 (Routine)
11 September 1999	Yanchep, AU	daily rain	39.2 mm (1.5 in)	18.1 mm (0.7 in)	64 years	51 of 100 (Notable)
5 July 1999	Yanchep, AU	daily rain	34.2 mm (1.3 in)	3.5 mm (0.14 in)	36 years	19 of 100 (Routine)
23 January 1999	Yanchep, AU	daily rain	31.0 mm (1.2 in)	18.8 mm (0.7 in)	59 years	40 of 100 (Notable)
5 January 1999	Yanchep, AU	daily rain	2.0 mm (0.08 in)	1.6 mm (0.06 in)	16 years	12 of 100 (Routine)
26 May 1998	Yanchep, AU	daily rain	31.2 mm (1.2 in)	3.3 mm (0.13 in)	43 years	21 of 100 (Routine)
11 March 1998	Yanchep, AU	daily rain	9.0 mm (0.35 in)	2.6 mm (0.10 in)	60 years	20 of 100 (Routine)
10 March 1998	Yanchep, AU	daily rain	11.4 mm (0.4 in)	8.6 mm (0.34 in)	5 years	19 of 100 (Routine)
11 April 1997	Yanchep, AU	daily rain	14.0 mm (0.6 in)	3.8 mm (0.15 in)	7 years	12 of 100 (Routine)
27 November 1995	Yanchep, AU	daily rain	2.6 mm (0.10 in)	0.6 mm (0.02 in)	32 years	15 of 100 (Routine)
6 September 1993	Yanchep, AU	daily rain	17.9 mm (0.7 in)	1.4 mm (0.06 in)	50 years	20 of 100 (Routine)
3 May 1993	Yanchep, AU	all-time rain	103.6 mm (4.1 in)	8.9 mm (0.35 in)	25 years	42 of 100 (Notable)
7 February 1993	Yanchep, AU	daily rain	22.2 mm (0.9 in)	12.3 mm (0.5 in)	23 years	20 of 100 (Routine)
20 November 1992	Yanchep, AU	daily rain	23.0 mm (0.9 in)	17.9 mm (0.7 in)	24 years	20 of 100 (Routine)

Extremes by Year

1934 to 2000

Yearly extremes at Yanchep: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	103.6 mm (4.1 in)	1993	42.2 mm (1.7 in)	66
Wettest five days (Rx5day)	138.8 mm (5.5 in)	1987	83.1 mm (3.3 in)	64
Longest dry spell (CDD)	124 days	1950	50 days	65

Wettest day (Rx1day)

The wettest day of the year at Yanchep, 1934 to 2000. The record is 103.6 mm (4.1 in) in 1993, marked on the chart; the median year is 42.2 mm (1.7 in).

Wettest day (Rx1day) at Yanchep by year
Year	Wettest day (Rx1day)
1934	50.0 mm (2.0 in)
1935	48.0 mm (1.9 in)
1936	42.4 mm (1.7 in)
1937	39.6 mm (1.6 in)
1938	45.5 mm (1.8 in)
1939	67.3 mm (2.6 in)
1940	36.8 mm (1.4 in)
1941	38.6 mm (1.5 in)
1942	28.4 mm (1.1 in)
1943	54.6 mm (2.1 in)
1944	39.9 mm (1.6 in)
1945	78.5 mm (3.1 in)
1946	48.8 mm (1.9 in)
1947	49.0 mm (1.9 in)
1948	49.3 mm (1.9 in)
1949	24.1 mm (0.9 in)
1950	53.8 mm (2.1 in)
1951	28.4 mm (1.1 in)
1952	52.1 mm (2.1 in)
1953	42.2 mm (1.7 in)
1954	37.6 mm (1.5 in)
1955	66.0 mm (2.6 in)
1956	36.8 mm (1.4 in)
1957	42.7 mm (1.7 in)
1958	39.1 mm (1.5 in)
1959	40.4 mm (1.6 in)
1960	29.2 mm (1.1 in)
1961	63.0 mm (2.5 in)
1962	38.9 mm (1.5 in)
1963	48.8 mm (1.9 in)
1964	42.2 mm (1.7 in)
1965	47.0 mm (1.9 in)
1966	35.1 mm (1.4 in)
1967	94.7 mm (3.7 in)
1968	58.2 mm (2.3 in)
1969	36.3 mm (1.4 in)
1970	33.3 mm (1.3 in)
1971	44.7 mm (1.8 in)
1972	39.1 mm (1.5 in)
1973	33.8 mm (1.3 in)
1974	38.3 mm (1.5 in)
1975	28.2 mm (1.1 in)
1976	41.4 mm (1.6 in)
1977	30.4 mm (1.2 in)
1978	51.8 mm (2.0 in)
1979	56.0 mm (2.2 in)
1980	41.8 mm (1.6 in)
1981	60.6 mm (2.4 in)
1982	60.2 mm (2.4 in)
1983	62.4 mm (2.5 in)
1984	35.0 mm (1.4 in)
1985	79.0 mm (3.1 in)
1986	50.3 mm (2.0 in)
1987	88.2 mm (3.5 in)
1988	42.4 mm (1.7 in)
1989	36.6 mm (1.4 in)
1990	76.8 mm (3.0 in)
1991	40.0 mm (1.6 in)
1992	91.0 mm (3.6 in)
1993	103.6 mm (4.1 in)
1995	2.6 mm (0.10 in)
1996	13.7 mm (0.5 in)
1997	36.5 mm (1.4 in)
1998	33.0 mm (1.3 in)
1999	39.2 mm (1.5 in)
2000	36.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Yanchep, 1934 to 2000. The record is 138.8 mm (5.5 in) in 1987, marked on the chart; the median year is 83.1 mm (3.3 in).

Wettest five days (Rx5day) at Yanchep by year
Year	Wettest five days (Rx5day)
1934	111.2 mm (4.4 in)
1935	71.1 mm (2.8 in)
1936	72.1 mm (2.8 in)
1937	82.5 mm (3.2 in)
1938	71.1 mm (2.8 in)
1939	111.0 mm (4.4 in)
1940	60.4 mm (2.4 in)
1941	87.9 mm (3.5 in)
1942	65.7 mm (2.6 in)
1943	71.4 mm (2.8 in)
1944	71.7 mm (2.8 in)
1945	130.6 mm (5.1 in)
1946	96.5 mm (3.8 in)
1947	90.7 mm (3.6 in)
1948	80.2 mm (3.2 in)
1949	65.9 mm (2.6 in)
1950	72.8 mm (2.9 in)
1951	67.6 mm (2.7 in)
1952	77.5 mm (3.1 in)
1953	83.1 mm (3.3 in)
1954	76.7 mm (3.0 in)
1955	117.1 mm (4.6 in)
1956	94.7 mm (3.7 in)
1957	94.0 mm (3.7 in)
1958	97.1 mm (3.8 in)
1959	94.4 mm (3.7 in)
1960	71.5 mm (2.8 in)
1961	75.4 mm (3.0 in)
1962	94.5 mm (3.7 in)
1963	128.6 mm (5.1 in)
1964	83.1 mm (3.3 in)
1965	121.0 mm (4.8 in)
1966	69.7 mm (2.7 in)
1967	114.0 mm (4.5 in)
1968	98.0 mm (3.9 in)
1969	73.1 mm (2.9 in)
1970	90.4 mm (3.6 in)
1971	50.5 mm (2.0 in)
1972	56.3 mm (2.2 in)
1973	76.2 mm (3.0 in)
1974	89.0 mm (3.5 in)
1975	65.0 mm (2.6 in)
1976	81.4 mm (3.2 in)
1977	58.3 mm (2.3 in)
1978	114.0 mm (4.5 in)
1979	94.6 mm (3.7 in)
1980	93.0 mm (3.7 in)
1981	121.2 mm (4.8 in)
1982	125.2 mm (4.9 in)
1983	98.0 mm (3.9 in)
1984	62.4 mm (2.5 in)
1985	98.6 mm (3.9 in)
1986	121.3 mm (4.8 in)
1987	138.8 mm (5.5 in)
1988	86.0 mm (3.4 in)
1989	62.5 mm (2.5 in)
1990	84.0 mm (3.3 in)
1991	75.6 mm (3.0 in)
1992	91.4 mm (3.6 in)
1993	103.6 mm (4.1 in)
1995	n/a
1996	n/a
1997	55.1 mm (2.2 in)
1998	37.5 mm (1.5 in)
1999	46.7 mm (1.8 in)
2000	55.3 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Yanchep, 1934 to 2000. The record is 124 days in 1950, marked on the chart; the median year is 50 days.

Longest dry spell (CDD) at Yanchep by year
Year	Longest dry spell (CDD)
1934	21 days
1935	29 days
1936	52 days
1937	41 days
1938	39 days
1939	53 days
1940	79 days
1941	51 days
1942	51 days
1943	61 days
1944	73 days
1945	41 days
1946	65 days
1947	71 days
1948	78 days
1949	46 days
1950	124 days
1951	35 days
1952	63 days
1953	74 days
1954	48 days
1955	48 days
1956	59 days
1957	72 days
1958	78 days
1959	22 days
1960	46 days
1961	35 days
1962	44 days
1963	37 days
1964	53 days
1965	50 days
1966	42 days
1967	48 days
1968	41 days
1969	54 days
1970	53 days
1971	38 days
1972	56 days
1973	58 days
1974	58 days
1975	79 days
1976	30 days
1977	31 days
1978	36 days
1979	51 days
1980	52 days
1981	47 days
1982	33 days
1983	39 days
1984	51 days
1985	35 days
1986	50 days
1987	75 days
1988	82 days
1989	45 days
1990	27 days
1991	55 days
1992	35 days
1993	49 days
1995	1 day
1996	n/a
1997	53 days
1998	59 days
1999	43 days
2000	37 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

59 years, 1935 to 1993

A day with at least 44.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 118.3 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Yanchep: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.5 mm (1.8 in)
5 years	59.3 mm (2.3 in)
10 years	70.8 mm (2.8 in)
25 years	87.7 mm (3.5 in)
50 years	102.1 mm (4.0 in)
100 years	118.3 mm (4.7 in)	Longer than the 59 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, 59 years of values from 1935 to 1993.

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: 103.6 mm (4.1 in) in 1993; 94.7 mm (3.7 in) in 1967; 91.0 mm (3.6 in) in 1992.

Download the Data

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