Adelaide climate

Name: Adelaide
Address: AU

Adelaide is warmest in January, with average highs of 28 °C, and coldest in July, when nights average 8.4 °C. July is the wettest month (64 mm) and March the driest (19 mm). Figures are 1991–2020 climate normals.

Across a full year Adelaide averages 473 mm of rain and 87 days above 25 °C.

Australia · population 1,469,163 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 28 °C
Coldest month July 8.4 °C
Driest month March 19 mm
Wettest month July 64 mm
Least cloud February 34 % cloud
Hottest on record January 43 °C
Coldest on record June 2.1 °C
Warmest sea February 22 °C

What to expectAdelaide through the year

Adelaide has a clear annual cycle: average daily highs run from 14 °C in July to 28 °C in January, a swing of 11 °C in mean temperature across the year.

Counted across a normal year, 87 days a year reach 25 °C, 36 of them reach 30 °C. The warmest reading in the 1991–2020 record is 43 °C, in January.

Rain is strongly seasonal. July averages 64 mm against 19 mm in March — 3.5 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Adelaide is warmest in February at 22 °C and coldest in August at 13 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.6 °C	21 mm	34 %
February	27.4 °C	19 mm	34 %
March	24.7 °C	19 mm	39 %
April	21.2 °C	38 mm	46 %
May	17.4 °C	51 mm	53 %
June	14.5 °C	58 mm	53 %
July	13.8 °C	64 mm	50 %
August	14.6 °C	58 mm	48 %
September	17.0 °C	54 mm	48 %
October	20.1 °C	36 mm	47 %
November	23.2 °C	30 mm	47 %
December	25.3 °C	25 mm	44 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.6 °C	17.3 °C	22.1 °C	42.7 °C	10.5 °C	20	10
February	27.4 °C	17.5 °C	22.1 °C	40.1 °C	10.6 °C	18	9
March	24.7 °C	15.7 °C	19.9 °C	38.2 °C	9.4 °C	13	5
April	21.2 °C	13.6 °C	17.1 °C	34.7 °C	6.7 °C	5	1
May	17.4 °C	11.2 °C	14.0 °C	27.2 °C	3.6 °C	0	0
June	14.5 °C	9.2 °C	11.6 °C	23.4 °C	2.1 °C	0	0
July	13.8 °C	8.4 °C	10.9 °C	19.8 °C	2.3 °C	0	0
August	14.6 °C	8.8 °C	11.5 °C	25.3 °C	2.4 °C	0	0
September	17.0 °C	10.2 °C	13.4 °C	28.5 °C	3.6 °C	1	0
October	20.1 °C	11.9 °C	15.7 °C	34.1 °C	5.4 °C	5	1
November	23.2 °C	14.0 °C	18.3 °C	39.4 °C	6.1 °C	11	4
December	25.3 °C	15.7 °C	20.3 °C	42.7 °C	9.4 °C	15	6

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	21 mm	3	14 h/day	34 %	54 %	24 km/h	21.3 °C
February	19 mm	3	13 h/day	34 %	55 %	23 km/h	21.8 °C
March	19 mm	3	12 h/day	39 %	59 %	22 km/h	21.1 °C
April	38 mm	5	11 h/day	46 %	64 %	21 km/h	19.3 °C
May	51 mm	8	10 h/day	53 %	72 %	21 km/h	17.2 °C
June	58 mm	9	9.8 h/day	53 %	78 %	22 km/h	15.1 °C
July	64 mm	10	10 h/day	50 %	78 %	23 km/h	13.5 °C
August	58 mm	10	11 h/day	48 %	74 %	24 km/h	13.0 °C
September	54 mm	9	12 h/day	48 %	70 %	25 km/h	13.9 °C
October	36 mm	6	13 h/day	47 %	63 %	25 km/h	15.7 °C
November	30 mm	5	14 h/day	47 %	59 %	24 km/h	17.7 °C
December	25 mm	4	14 h/day	44 %	56 %	25 km/h	19.7 °C

Where Adelaide ranks

Ranking	Position	Value
The coolest places in the world in August	27thof 50	15 °C
The coolest places in the world in July	32ndof 50	14 °C
The coolest places in the world in June	43rdof 50	15 °C
Places with the best weather in the world in April	50thof 50	95/100

Planning a trip? See the best time to visit Adelaide.

QuestionsCommon questions about Adelaide’s climate

When is the best time to visit Adelaide?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, November, December sit closest to 20 °C on average, January is the warmest month and March the driest. The month-by-month table above has the full picture.

How hot does Adelaide get?

In January, the warmest month, daily highs average 28 °C. About 36 days a year pass 30 °C. The highest value in the 1991–2020 record is 43 °C.

How cold does it get in winter?

Nights average 8.4 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Adelaide?

July, averaging 64 mm over 10 days with rain. The driest month is March with 19 mm. The year as a whole averages 473 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Adelaide rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.