Australia · 1991–2020

Best time to visit
Mount Wilson.

December leads for comfortable weather in Mount Wilson: typically 22.7°C by day, 11.7°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high22.7°C

Typical low11.7°C

Rain in December86 mm

Comfort

December

December · January · February

76climate match

Beach

January

January · December · February

40climate match

Outdoors

April

April · October · November

80climate match

The weakest month is June, scoring 24 against December’s 76 — days reach only 10.3°C, 14° below the 24°C the score treats as ideal.

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

7524.5° / 13.6°

Feb

7123.1° / 13.4°

Mar

6320.7° / 11.5°

Apr

5917.4° / 8.9°

May

4413.6° / 6.2°

Jun

2410.3° / 4°

Jul

269.6° / 2.7°

Aug

3011.3° / 3°

Sep

4614.8° / 5.4°

Oct

5818° / 7.7°

Nov

6220.4° / 9.8°

Dec

7622.7° / 11.7°

Monthly climate evidence for Mount Wilson — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	24.5°C	13.6°C	126 mm	11.9	14 h 09	75	Strong coverage
February	23.1°C	13.4°C	146 mm	11	13 h 21	71	Strong coverage
March	20.7°C	11.5°C	128 mm	11.1	12 h 23	63	Strong coverage
April	17.4°C	8.9°C	65 mm	7.4	11 h 18	59	Strong coverage
May	13.6°C	6.2°C	57 mm	6.4	10 h 25	44	Strong coverage
June	10.3°C	4°C	79 mm	8.4	9 h 57	24	Strong coverage
July	9.6°C	2.7°C	47 mm	6.5	10 h 08	26	Strong coverage
August	11.3°C	3°C	59 mm	6.1	10 h 53	30	Strong coverage
September	14.8°C	5.4°C	57 mm	7	11 h 56	46	Strong coverage
October	18°C	7.7°C	71 mm	8.1	12 h 59	58	Strong coverage
November	20.4°C	9.8°C	102 mm	11.6	13 h 55	62	Strong coverage
December	22.7°C	11.7°C	86 mm	10.1	14 h 22	76	Strong coverage

Records at MOUNT BOYCE AWS, 1990–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	38.0°C4 Jan 2020	4.3°C26 Jan 1991	142 mm18 Jan 2026	252 mm2026 · driest 18 mm in 2005	36
February	38.0°C1 Feb 2020	3.8°C13 Feb 1996	167 mm24 Feb 2013	560 mm2020 · driest 7 mm in 1996	36
March	34.2°C19 Mar 2023	2.6°C28 Mar 2026	111 mm21 Mar 2021	518 mm2021 · driest 13 mm in 1996	36
April	28.1°C6 Apr 1991	-0.9°C12 Apr 1996	149 mm6 Apr 2024	314 mm2015 · driest 1 mm in 1996	36
May	26.3°C25 May 1994	-2.2°C29 May 2000	100 mm23 May 2025	232 mm2009 · driest 5 mm in 2014	36
June	23.0°C6 Jun 1994	-3.0°C29 Jun 2010	108 mm5 Jun 2016	305 mm2007 · driest 5 mm in 2004	36
July	17.5°C21 Jul 2026	-3.4°C17 Jul 2007	91 mm4 Jul 2022	256 mm2022 · driest 3 mm in 2017	36
August	20.7°C25 Aug 1995	-3.6°C4 Aug 1994	121 mm8 Aug 1998	295 mm1998 · driest 2 mm in 1995	35
September	27.6°C23 Sep 2017	-3.6°C6 Sep 1995	69 mm25 Sep 1995	145 mm1995 · driest 0 mm in 2017	36
October	29.3°C21 Oct 2013	-1.5°C28 Oct 1998	47 mm2 Oct 2004	186 mm1999 · driest 13 mm in 2013	36
November	35.5°C23 Nov 2014	0.2°C16 Nov 2006	105 mm29 Nov 2018	291 mm2007 · driest 26 mm in 2019	36
December	37.5°C21 Dec 2019	2.4°C5 Dec 2011	59 mm20 Dec 2023	200 mm2010 · driest 0 mm in 2019	36

Typical days per month at MOUNT BOYCE AWS, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	14	5	0	4
February	10	3	0	4
March	5	<1	0	4
April	<1	0	0	2
May	0	0	<1	2
June	0	0	2	2
July	0	0	5	1
August	0	0	5	1
September	<1	0	1	2
October	2	0	<1	2
November	6	1	0	3
December	10	2	0	3

How often, not how much — every day in MOUNT BOYCE AWS’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	53%	41%	13%	57%	21.5–27.2°C
February	51%	42%	14%	55%	20.9–25.1°C
March	45%	38%	13%	49%	19.1–22.5°C
April	22%	25%	7%	27%	15.5–19.4°C
May	1%	23%	6%	24%	12.3–14.9°C
June	0%	27%	6%	32%	9.0–11.2°C
July	0%	23%	4%	21%	8.5–10.9°C
August	<1%	22%	5%	26%	10.1–12.8°C
September	14%	23%	6%	25%	13.1–16.2°C
October	33%	27%	7%	32%	16.0–20.3°C
November	43%	39%	11%	51%	17.5–23.3°C
December	56%	33%	9%	43%	19.9–25.4°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.

1991Each stripe is one year’s mean temperature against the 35-year average. Warmest: 1991. Coolest: 1992.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2156487
NOAA station: ASN00063292 · MOUNT BOYCE AWS
Station distance: 15.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude -33.50°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 MOUNT BOYCE AWS is what differs

Blackheath→Mount Victoria→Little Hartley→Berambing→Ganbenang→Lowther→

Or put two places side by side: Mount Wilson vs Blackheath

Best time to visitMount Wilson.