Australia · 1991–2020

Best time to visit
Cairns.

July leads for comfortable weather in Cairns: typically 26.3°C by day, 16.7°C at night, with 39 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high26.3°C

Typical low16.7°C

Rain in July39 mm

Comfort

July

July · August · June

86climate match

Beach

September

September · October · August

90climate match

Outdoors

July

July · August · June

64climate match

The weakest month is January, scoring 5 against July’s 86 — 412 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

531.8° / 23.7°

Feb

531.7° / 23.8°

Mar

531° / 23°

Apr

3829.8° / 21.9°

May

6328.1° / 19.8°

Jun

8126.6° / 18°

Jul

8626.3° / 16.7°

Aug

8427.3° / 16.6°

Sep

7728.9° / 18°

Oct

6230.1° / 20.4°

Nov

5131.2° / 22°

Dec

2931.9° / 23.2°

Monthly climate evidence for Cairns — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 13 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	31.8°C	23.7°C	412 mm	16.7	29.0°C	13 h 02	5	Good coverage
February	31.7°C	23.8°C	450 mm	15.5	29.1°C	12 h 40	5	Good coverage
March	31°C	23°C	370 mm	15.5	28.4°C	12 h 14	5	Good coverage
April	29.8°C	21.9°C	178 mm	14.8	27.3°C	11 h 44	38	Good coverage
May	28.1°C	19.8°C	90 mm	11	25.7°C	11 h 20	63	Good coverage
June	26.6°C	18°C	46 mm	7.3	24.3°C	11 h 07	81	Good coverage
July	26.3°C	16.7°C	39 mm	6.2	23.5°C	11 h 12	86	Good coverage
August	27.3°C	16.6°C	28 mm	5.1	23.6°C	11 h 33	84	Good coverage
September	28.9°C	18°C	29 mm	4.2	24.8°C	12 h 01	77	Good coverage
October	30.1°C	20.4°C	67 mm	6.5	26.0°C	12 h 30	62	Good coverage
November	31.2°C	22°C	91 mm	8.7	27.3°C	12 h 56	51	Good coverage
December	31.9°C	23.2°C	196 mm	11.8	28.5°C	13 h 08	29	Good coverage

Records at CAIRNS POST OFFICE, 1889–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	43.2°C31 Jan 1923	17.2°C21 Jan 1893	354 mm31 Jan 1913	1178 mm1981 · driest 18 mm in 1980	101
February	42.2°C1 Feb 1923	17.8°C19 Feb 1920	385 mm11 Feb 1911	1199 mm2000 · driest 50 mm in 1900	100
March	37.8°C15 Mar 1907	15.7°C27 Mar 1901	343 mm4 Mar 1928	1237 mm1945 · driest 27 mm in 1993	101
April	34.7°C7 Apr 1907	12.2°C29 Apr 1929	512 mm2 Apr 1911	1329 mm1911 · driest 6 mm in 1893	101
May	33.3°C1 May 1905	9.4°C26 May 1953	137 mm1 May 1913	334 mm1901 · driest 3 mm in 1925	100
June	33.3°C1 Jun 1905	7.0°C22 Jun 1946	156 mm22 Jun 1894	227 mm1894 · driest 0 mm in 1904	99
July	35.0°C26 Jul 1905	6.1°C12 Jul 1932	45 mm24 Jul 1930	98 mm1902 · driest 0 mm in 1910	101
August	36.7°C9 Aug 1905	6.2°C2 Aug 1919	70 mm6 Aug 1947	140 mm1954 · driest 0 mm in 1900	102
September	38.0°C23 Sep 1981	7.8°C14 Sep 1929	52 mm19 Sep 2010	137 mm1951 · driest 0 mm in 1980	99
October	36.7°C4 Oct 1905	12.0°C22 Oct 1980	213 mm18 Oct 2011	413 mm2011 · driest 0 mm in 1926	100
November	40.5°C28 Nov 2018	12.2°C16 Nov 1905	197 mm8 Nov 1933	357 mm1933 · driest 0 mm in 1913	102
December	40.6°C16 Dec 1929	15.0°C8 Dec 1980	269 mm16 Dec 2023	758 mm2018 · driest 10 mm in 1890	102

Typical days per month at CAIRNS POST OFFICE, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	27	24	8
February	24	20	9
March	26	21	8
April	25	13	5
May	26	2	2
June	23	<1	<1
July	23	0	<1
August	27	<1	<1
September	27	5	<1
October	28	16	1
November	27	23	3
December	28	25	5

How often, not how much — every day in CAIRNS POST OFFICE’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	49%	50%	27%	69%	30.6–32.8°C
February	47%	54%	30%	72%	30.3–32.6°C
March	48%	52%	28%	70%	29.6–31.7°C
April	54%	48%	19%	63%	28.1–30.6°C
May	65%	36%	10%	45%	26.5–28.8°C
June	75%	25%	6%	30%	25.0–27.2°C
July	80%	20%	3%	21%	24.7–26.9°C
August	82%	19%	3%	22%	25.4–28.1°C
September	83%	17%	4%	18%	27.0–29.4°C
October	82%	18%	4%	22%	28.5–31.0°C
November	74%	27%	8%	33%	29.6–32.1°C
December	67%	35%	15%	46%	30.7–32.9°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.

1890Each stripe is one year’s mean temperature against the 70-year average. Warmest: 1998. Coolest: 1941.2020

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2172797
NOAA station: ASN00031010 · CAIRNS POST OFFICE
Station distance: 2.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude -16.92°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 13 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 CAIRNS POST OFFICE is what differs

Edmonton→Mount Sheridan→Bentley Park→Mooroobool→Gordonvale→Cairns City→

Or put two places side by side: Cairns vs Edmonton

Best time to visitCairns.

July

September

July

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Cairns.

The whole year,
without the guesswork.

Nearby, measured,
and named.