Wollongong weather in July

Name: Wollongong
Address: AU

In July, Wollongong has daytime highs averaging 16 °C, nights around 10 °C, with 6.7 wet days, and a sea temperature of 19 °C. Figures are 1991–2020 climate normals.

15.6°C Average high
10.4°C Average low
6.7days Wet days
50mm Rainfall
18.5°C Sea temperature
10h Daylight

Daily temperatures through July

Daily highDaily low Day of month on the horizontal axis. Highs peak at 16.4 °C and lows bottom out at 10.0 °C.

How July develops

Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.

Days	Avg high	Avg low	Chance of rain
1–10 July	15.6 °C	10.6 °C	22 %
11–20 July	15.4 °C	10.4 °C	23 %
21–31 July	15.9 °C	10.4 °C	21 %

Chance of a wet day (over 1 mm) by date in July. Wettest date over the 30 years: July 5, at 30 %. Single dates are noisy — read the shape, not the spikes.

What to expect

Measure	Typical July	Share of the month
Days above 25 °C	0 of 31	0 %
Days above 30 °C	0 of 31	0 %
Days below 0 °C	0 of 31	0 %
Days with more than 1 mm rain	6.7 of 31	22 %

Conditions in July

Measure	Average
Mean temperature	13 °C
Record high (1991–2020)	25 °C
Record low (1991–2020)	5.3 °C
Relative humidity	69 %
Wind speed	21 km/h
Cloud cover	36 %

Where Wollongong ranks in July

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

July compared with the months around it

Month	Avg high	Rainfall	Cloud
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 %

See all twelve months for Wollongong

July is the 12th warmest month here.
It is the 1st driest month of the year.
It ranks 2nd for least cloud cover.
Days last about 10 hours from sunrise to sunset.
It rains on 6.7 of 31 days — 22 % of the month.
Nights are about 5.2 °C cooler than the middle of the day.
The hottest July day on record since 1991 reached 25 °C, 9.4 °C above the usual daytime high.
Beach score: 40 / 100 — see how this is calculated.

Nearby destinations in July

Destination	Avg high	Wet days	Sea
Wollongong	16 °C	6.7	19
Sydney	16 °C	5	19
Central Coast	16 °C	7	19
Newcastle	16 °C	7	19
Canberra	10 °C	6	–
Melbourne	13 °C	11	12

QuestionsJuly in Wollongong, answered

How warm is Wollongong in July?

Daily highs average 16 °C and nights fall to about 10 °C, a spread of 5.2 °C between afternoon and dawn. That makes July the 12th warmest month of the year here.

Does it rain much in Wollongong in July?

July averages 50 mm of rain, spread over about 7 of the 31 days — 22 % of the month. Cloud cover averages 36 % of the sky.

Is the sea warm enough to swim in July?

The sea averages 19 °C off Wollongong in July. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.

How long are the days in July?

Wollongong averages 10 hours between sunrise and sunset in July. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.

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: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. 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.