Wanneroo Threshold Days by Year

3 fixed thresholds counted per year at Wanneroo (ASN00009105): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wanneroo Thresholds

Wanneroo: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 1926 with 49.
Wanneroo: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1917 with 12.
Wanneroo: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1968 with 2.
3 fixed thresholds have at least one qualifying day at Wanneroo.

Days with 10 mm (0.39 in) or more of precipitation

34 years with a qualifying day

Days per year at Wanneroo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1926.

Days with 10 mm (0.39 in) or more of precipitation per year at Wanneroo
Year	Days	Decade average
1907	30	30
1908	26	30
1909	34	30
1914	17	29.7
1915	37	29.7
1916	26	29.7
1917	43	29.7
1918	34	29.7
1919	21	29.7
1920	40	32.9
1921	32	32.9
1922	23	32.9
1923	42	32.9
1924	28	32.9
1925	26	32.9
1926	49	32.9
1927	33	32.9
1928	33	32.9
1929	23	32.9
1964	39	24.8
1965	28	24.8
1966	20	24.8
1967	22	24.8
1968	23	24.8
1969	17	24.8
1972	22	23.3
1973	30	23.3
1977	18	23.3
1980	22	21
1987	20	21
1988	16	21
1989	26	21
2004	13	13
2025	10	10

For each year, a bar from the first to the last day at Wanneroo meeting 10 mm (0.39 in).

First to last qualifying date each year at Wanneroo
Year	First date	Last date
1907	1907-04-26	1907-10-05
1908	1908-05-03	1908-10-13
1909	1909-03-27	1909-11-07
1914	1914-02-17	1914-11-14
1915	1915-02-26	1915-10-21
1916	1916-01-29	1916-11-23
1917	1917-04-07	1917-12-20
1918	1918-03-27	1918-10-28
1919	1919-04-18	1919-12-10
1920	1920-03-29	1920-09-11
1921	1921-02-20	1921-10-13
1922	1922-04-27	1922-09-25
1923	1923-01-20	1923-12-16
1924	1924-05-12	1924-11-10
1925	1925-01-24	1925-10-12
1926	1926-03-11	1926-11-19
1927	1927-01-10	1927-10-29
1928	1928-05-20	1928-10-21
1929	1929-05-02	1929-11-10
1964	1964-04-01	1964-12-19
1965	1965-05-01	1965-11-05
1966	1966-04-20	1966-12-27
1967	1967-04-11	1967-12-10
1968	1968-02-03	1968-10-15
1969	1969-04-08	1969-11-03
1972	1972-05-31	1972-10-28
1973	1973-01-18	1973-10-24
1977	1977-05-10	1977-09-07
1980	1980-04-18	1980-10-22
1987	1987-04-08	1987-09-29
1988	1988-03-24	1988-10-04
1989	1989-01-26	1989-10-30
2004	2004-05-07	2004-10-21
2025	2025-03-14	2025-09-09

Every Fixed Threshold

Fixed thresholds at Wanneroo
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	34	49	1926	10
25 mm (0.98 in): Days with 25 mm or more rain	34	12	1917	3
50 mm (1.97 in): Days with 50 mm or more rain	12	2	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

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Data for Wanneroo 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Wanneroo Threshold Days by Year

Key Facts for Wanneroo Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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