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Australia · 1991–2020

Best time to visit
Onslow.

July leads for comfortable weather in Onslow: typically 25.4°C by day, 13.6°C at night, with 17 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high25.4°C

Typical low13.6°C

Rain in July17 mm

Comfort

July

July · June · August

93climate match

Beach

May

May · November · April

89climate match

Outdoors

July

July · August · June

77climate match

The weakest month is February, scoring 38 against July’s 93 — days average 34.8°C, 11° above 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

4635.2° / 24.6°

Feb

3834.8° / 25.4°

Mar

4535.1° / 24.5°

Apr

5832.9° / 22.1°

May

7429.5° / 18.3°

Jun

9126° / 15.1°

Jul

9325.4° / 13.6°

Aug

8926.9° / 14.1°

Sep

8328.9° / 15.5°

Oct

6732.1° / 18.3°

Nov

6132.8° / 20.2°

Dec

5334.1° / 22.7°

Monthly climate evidence for Onslow — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 2 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	35.2°C	24.6°C	33 mm	2.6	28.0°C	13 h 19	46	Good coverage
February	34.8°C	25.4°C	85 mm	3.8	28.8°C	12 h 51	38	Good coverage
March	35.1°C	24.5°C	43 mm	2.3	29.2°C	12 h 16	45	Good coverage
April	32.9°C	22.1°C	21 mm	1.3	28.1°C	11 h 37	58	Good coverage
May	29.5°C	18.3°C	48 mm	2.3	26.1°C	11 h 06	74	Good coverage
June	26°C	15.1°C	47 mm	3.2	24.3°C	10 h 49	91	Good coverage
July	25.4°C	13.6°C	17 mm	1.8	23.0°C	10 h 56	93	Good coverage
August	26.9°C	14.1°C	4 mm	0.9	22.4°C	11 h 22	89	Good coverage
September	28.9°C	15.5°C	1 mm	0.3	22.6°C	12 h	83	Good coverage
October	32.1°C	18.3°C	1 mm	0.1	23.8°C	12 h 38	67	Good coverage
November	32.8°C	20.2°C	1 mm	0.3	25.1°C	13 h 11	61	Good coverage
December	34.1°C	22.7°C	11 mm	0.7	26.6°C	13 h 27	53	Good coverage

Records at ONSLOW, 1957–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	49.2°C11 Jan 2008	16.6°C4 Jan 2007	192 mm25 Jan 1971	246 mm1971 · driest 0 mm in 1979	52
February	48.3°C3 Feb 1959	15.1°C2 Feb 1979	356 mm8 Feb 1963	545 mm1995 · driest 0 mm in 1998	52
March	46.2°C7 Mar 1980	16.9°C28 Mar 2001	283 mm16 Mar 1958	375 mm1958 · driest 0 mm in 2010	52
April	43.3°C1 Apr 1970	10.9°C29 Apr 1968	76 mm20 Apr 1980	117 mm1970 · driest 0 mm in 1960	52
May	39.0°C1 May 1990	8.9°C27 May 1960	184 mm28 May 1998	394 mm1998 · driest 0 mm in 2000	52
June	32.7°C8 Jun 1985	3.1°C30 Jun 1958	139 mm11 Jun 1992	227 mm1986 · driest 0 mm in 1984	52
July	32.2°C8 Jul 1959	4.6°C21 Jul 1961	71 mm10 Jul 2005	92 mm2005 · driest 0 mm in 1977	53
August	35.5°C28 Aug 2011	5.4°C10 Aug 1968	36 mm4 Aug 1978	56 mm1978 · driest 0 mm in 2007	51
September	39.0°C25 Sep 2009	7.9°C11 Sep 1969	17 mm11 Sep 1970	25 mm1970 · driest 0 mm in 2000	50
October	44.7°C16 Oct 1981	8.9°C6 Oct 1964	21 mm15 Oct 1975	27 mm1975 · driest 0 mm in 1967	49
November	45.5°C27 Nov 2007	12.9°C9 Nov 1962	12 mm7 Nov 1964	23 mm1964 · driest 0 mm in 2006	50
December	48.7°C22 Dec 2011	15.6°C5 Dec 1984	85 mm11 Dec 1995	119 mm1995 · driest 0 mm in 1977	51

Typical days per month at ONSLOW, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	30	29	1
February	28	27	2
March	31	30	<1
April	29	27	<1
May	29	13	1
June	21	<1	1
July	18	<1	<1
August	25	3	<1
September	27	10	0
October	31	21	0
November	29	21	0
December	31	27	<1

How often, not how much — every day in ONSLOW’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	91%	7%	3%	7%	33.9–36.6°C
February	88%	10%	4%	11%	33.8–36.9°C
March	93%	8%	3%	6%	33.8–36.1°C
April	96%	4%	1%	3%	31.8–34.1°C
May	92%	9%	4%	6%	27.4–30.6°C
June	90%	10%	4%	6%	24.7–27.2°C
July	94%	6%	2%	3%	23.6–26.3°C
August	97%	3%	<1%	1%	25.4–28.2°C
September	99%	<1%	0%	<1%	27.5–30.8°C
October	99%	<1%	<1%	0%	29.4–34.2°C
November	99%	<1%	<1%	<1%	31.5–35.4°C
December	98%	1%	<1%	<1%	32.8–36.2°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.

1957Each stripe is one year’s mean temperature against the 43-year average. Warmest: 2010. Coolest: 1960.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2064155
NOAA station: ASN00005016 · ONSLOW
Station distance: 0.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude -21.64°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 2 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.

Validated places to explore

Tokyo→Bangkok→Reykjavik→Lisbon→

Best time to visitOnslow.

July

May

July

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Onslow.

The whole year,
without the guesswork.

Nearby, measured,
and named.