Joondalup Weather in August
What's the weather like in Joondalup (Western Australia) in August 2025?
The climate in Joondalup during August can be summarized as mild and damp.
August is in the winter in Joondalup and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 9°C (49°F) is normal.
| Daytime temperature | 18.3°C 64.9°F |
|---|---|
| Nightly temperature | 9.4°C 48.8°F |
| Average temperature | 13.8°C 56.8°F |
| Daily sunshine | 7.1 hrs |
| Avg rainfall | 104 mm 4.1 ins |
| Rainy days | 13 days |
| Sea temperature | 19.3°C 66.8°F |
| Humidity | 67% |
| Windspeed | 16.9kph 11 mph |
On average August is the 3rd wettest month of the year in Joondalup with around 104mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
August temperatures in Joondalup
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Joondalup in August 2025.
Other monthly averages
Best places to visit in August
Joondalup weather stats
| Hottest month: | February | 30.6°C 87.1°F |
|---|---|---|
| Driest month: | January | 7mm 0.3ins |
| Sunniest month: | January | 12hrs |
| Coldest month: | July | 17.7°C 63.9°F |
| Wettest month: | June | 157mm 6.2ins |
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