Wollongong climate

Name: Wollongong
Address: AU

Wollongong is warmest in January, with average highs of 25 °C, and coldest in July, when nights average 10 °C. February is the wettest month (110 mm) and July the driest (50 mm). Figures are 1991–2020 climate normals.

Across a full year Wollongong averages 880 mm of rain and 57 days above 25 °C.

Australia · population 280,153 · 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 25 °C
Coldest month July 10 °C
Driest month July 50 mm
Wettest month February 110 mm
Least cloud August 33 % cloud
Hottest on record January 41 °C
Coldest on record August 4.6 °C
Warmest sea February 23 °C

What to expectWollongong through the year

Wollongong has a clear annual cycle: average daily highs run from 16 °C in July to 25 °C in January, a swing of 9.1 °C in mean temperature across the year.

Counted across a normal year, 57 days a year reach 25 °C, 9 of them reach 30 °C. The warmest reading in the 1991–2020 record is 41 °C, in January.

Rain is strongly seasonal. February averages 110 mm against 50 mm in July — 2.2 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Wollongong is warmest in February at 23 °C and coldest in August at 18 °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	25.1 °C	83 mm	56 %
February	24.5 °C	110 mm	57 %
March	23.1 °C	95 mm	52 %
April	21.0 °C	74 mm	46 %
May	18.4 °C	73 mm	43 %
June	16.1 °C	90 mm	44 %
July	15.6 °C	50 mm	36 %
August	16.7 °C	51 mm	33 %
September	18.9 °C	50 mm	38 %
October	20.9 °C	64 mm	49 %
November	22.3 °C	77 mm	57 %
December	23.9 °C	64 mm	56 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	25.1 °C	19.4 °C	21.8 °C	40.6 °C	13.2 °C	15	3
February	24.5 °C	19.4 °C	21.6 °C	37.6 °C	13.9 °C	10	2
March	23.1 °C	18.2 °C	20.3 °C	36.3 °C	11.5 °C	7	1
April	21.0 °C	15.9 °C	18.1 °C	32.4 °C	10.0 °C	2	0
May	18.4 °C	13.4 °C	15.6 °C	25.5 °C	7.3 °C	0	0
June	16.1 °C	11.5 °C	13.5 °C	21.8 °C	6.8 °C	0	0
July	15.6 °C	10.4 °C	12.7 °C	25.0 °C	5.3 °C	0	0
August	16.7 °C	10.7 °C	13.3 °C	26.4 °C	4.6 °C	0	0
September	18.9 °C	12.4 °C	15.3 °C	32.7 °C	6.4 °C	2	0
October	20.9 °C	14.3 °C	17.1 °C	34.4 °C	8.6 °C	4	1
November	22.3 °C	16.0 °C	18.7 °C	38.1 °C	9.9 °C	6	1
December	23.9 °C	17.8 °C	20.3 °C	40.1 °C	11.7 °C	10	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	83 mm	10	14 h/day	56 %	76 %	23 km/h	22.7 °C
February	110 mm	11	13 h/day	57 %	77 %	23 km/h	23.3 °C
March	95 mm	12	12 h/day	52 %	76 %	22 km/h	23.1 °C
April	74 mm	10	11 h/day	46 %	74 %	20 km/h	22.1 °C
May	73 mm	9	10 h/day	43 %	72 %	20 km/h	20.8 °C
June	90 mm	9	9.9 h/day	44 %	73 %	21 km/h	19.5 °C
July	50 mm	7	10 h/day	36 %	69 %	21 km/h	18.5 °C
August	51 mm	6	11 h/day	33 %	66 %	22 km/h	17.9 °C
September	50 mm	6	12 h/day	38 %	67 %	23 km/h	18.1 °C
October	64 mm	9	13 h/day	49 %	70 %	23 km/h	19.0 °C
November	77 mm	10	14 h/day	57 %	73 %	24 km/h	19.9 °C
December	64 mm	10	14 h/day	56 %	74 %	24 km/h	21.3 °C

How Wollongong compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Wollongong	25 °C	10 °C	880 mm	57
Sydney · Australia	26 °C	9.0 °C	681 mm	69
Central Coast · Australia	26 °C	10 °C	868 mm	71
Newcastle · Australia	26 °C	10 °C	746 mm	80
Canberra · Australia	27 °C	1.6 °C	562 mm	65
Melbourne · Australia	26 °C	6.8 °C	616 mm	64

Where Wollongong ranks

Ranking	Position	Value
The coolest places in the world in July	49th of 50	16 °C

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

QuestionsCommon questions about Wollongong’s climate

When is the best time to visit Wollongong?

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 July the driest. The month-by-month table above has the full picture.

How hot does Wollongong get?

In January, the warmest month, daily highs average 25 °C. About 9 days a year pass 30 °C. The highest value in the 1991–2020 record is 41 °C.

How cold does it get in winter?

Nights average 10 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Wollongong?

February, averaging 110 mm over 11 days with rain. The driest month is July with 50 mm. The year as a whole averages 880 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 Wollongong 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
Data point: -34.424°, 150.893° (the coordinates the reanalysis values are taken for)
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.