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Australia · 1991–2020

Best time to visit
Willetton.

April leads for comfortable weather in Willetton: typically 25.9°C by day, 12.4°C at night, with 37 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high25.9°C

Typical low12.4°C

Rain in April37 mm

Comfort

April

April · November · October

87climate match

Beach

March

March · December · January

83climate match

Outdoors

October

October · September · April

85climate match

The weakest month is July, scoring 37 against April’s 87 — days reach only 18.1°C, 6° below the 24°C the score treats as ideal, and 163 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

7231.4° / 16.8°

Feb

7131.6° / 17.1°

Mar

8129.6° / 15.5°

Apr

8725.9° / 12.4°

May

6922.1° / 9.2°

Jun

4719.2° / 7.6°

Jul

3718.1° / 6.9°

Aug

4618.7° / 7.1°

Sep

6120.1° / 8.1°

Oct

8423.1° / 9.9°

Nov

8726.4° / 12.6°

Dec

8229.4° / 14.9°

Monthly climate evidence for Willetton — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 26 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	31.4°C	16.8°C	17 mm	1.5	21.8°C	14 h 02	72	Strong coverage
February	31.6°C	17.1°C	18 mm	1.1	22.3°C	13 h 17	71	Strong coverage
March	29.6°C	15.5°C	19 mm	2.7	22.3°C	12 h 23	81	Strong coverage
April	25.9°C	12.4°C	37 mm	4.7	22.0°C	11 h 21	87	Strong coverage
May	22.1°C	9.2°C	95 mm	9.1	21.6°C	10 h 30	69	Strong coverage
June	19.2°C	7.6°C	143 mm	12.8	20.7°C	10 h 04	47	Strong coverage
July	18.1°C	6.9°C	163 mm	15.1	19.8°C	10 h 14	37	Strong coverage
August	18.7°C	7.1°C	128 mm	13.2	19.1°C	10 h 57	46	Strong coverage
September	20.1°C	8.1°C	85 mm	10.9	18.5°C	11 h 56	61	Strong coverage
October	23.1°C	9.9°C	43 mm	6.3	18.7°C	12 h 56	84	Strong coverage
November	26.4°C	12.6°C	30 mm	4	19.6°C	13 h 49	87	Strong coverage
December	29.4°C	14.9°C	9 mm	1.8	20.8°C	14 h 14	82	Strong coverage

Records at JANDAKOT AERO, 1989–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	45.7°C31 Jan 1991	4.7°C25 Jan 2001	119 mm16 Jan 2018	137 mm2000 · driest 0 mm in 2023	36
February	46.6°C23 Feb 1991	6.5°C3 Feb 2003	173 mm9 Feb 1992	185 mm1992 · driest 0 mm in 1995	37
March	43.0°C10 Mar 2003	1.6°C28 Mar 2007	77 mm28 Mar 2026	88 mm2026 · driest 0 mm in 2011	36
April	39.2°C11 Apr 2020	2.3°C29 Apr 2000	63 mm17 Apr 2002	106 mm2008 · driest 0 mm in 2001	36
May	33.4°C9 May 2025	-0.6°C25 May 2012	66 mm19 May 2005	222 mm2005 · driest 22 mm in 2026	36
June	25.6°C1 Jun 2019	-3.4°C17 Jun 2006	63 mm14 Jun 2000	273 mm2005 · driest 36 mm in 2006	36
July	25.9°C21 Jul 1994	-2.8°C27 Jul 1998	59 mm30 Jul 2001	315 mm2021 · driest 35 mm in 2012	37
August	29.4°C28 Aug 2019	-1.4°C21 Aug 2000	64 mm4 Aug 1994	207 mm2025 · driest 30 mm in 2008	36
September	34.2°C20 Sep 2014	-1.3°C22 Sep 2008	47 mm6 Sep 2025	173 mm2013 · driest 5 mm in 1995	36
October	37.4°C17 Oct 2009	-1.0°C6 Oct 1994	68 mm18 Oct 1995	139 mm1995 · driest 3 mm in 2000	36
November	40.3°C9 Nov 2019	0.8°C18 Nov 2004	32 mm10 Nov 2004	81 mm2020 · driest 2 mm in 2017	36
December	44.0°C26 Dec 2007	3.2°C2 Dec 2002	24 mm7 Dec 2011	39 mm2011 · driest 0 mm in 2022	36

Typical days per month at JANDAKOT AERO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	28	18	0	<1
February	26	18	0	<1
March	26	14	0	<1
April	16	4	0	1
May	5	<1	<1	4
June	<1	0	<1	5
July	0	0	2	6
August	<1	0	<1	5
September	2	<1	<1	3
October	8	2	<1	1
November	16	7	0	<1
December	24	12	0	<1

How often, not how much — every day in JANDAKOT AERO’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	95%	5%	1%	1%	29.9–33.3°C
February	96%	5%	1%	2%	30.0–34.1°C
March	92%	8%	2%	4%	28.3–31.0°C
April	82%	17%	4%	18%	23.9–27.7°C
May	61%	31%	12%	42%	20.8–23.7°C
June	26%	44%	19%	62%	18.0–20.1°C
July	14%	49%	20%	69%	17.3–19.0°C
August	23%	42%	16%	57%	17.7–19.8°C
September	40%	35%	9%	46%	19.1–22.0°C
October	70%	21%	5%	20%	21.2–24.7°C
November	86%	13%	3%	9%	24.5–29.0°C
December	95%	6%	<1%	3%	27.5–31.6°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1990Each stripe is one year’s mean temperature against the 34-year average. Warmest: 2024. Coolest: 2001.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 8348101
NOAA station: ASN00009172 · JANDAKOT AERO
Station distance: 5.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude -32.05°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 26 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from JANDAKOT AERO is what differs

Canning Vale→Byford→Hamilton Hill→Leeming→Success→Spearwood→

Or put two places side by side: Willetton vs Canning Vale

Best time to visitWilletton.