Portland Weather in August
What's the weather like in Portland (Victoria) in August 2025?
The climate in Portland during August can be summarized as mild and a little damp.
August is in the winter in Portland and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 14°C (58°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 14.2°C 57.5°F |
|---|---|
| Nightly temperature | 7.1°C 44.7°F |
| Average temperature | 10.6°C 51.1°F |
| Daily sunshine | 5.4 hrs |
| Avg rainfall | 99 mm 3.9 ins |
| Rainy days | 10 days |
| Sea temperature | 14.1°C 57.3°F |
| Humidity | 74% |
| Windspeed | 24.5kph 15 mph |
On average August is the 2nd wettest month of the year in Portland with around 99mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.4 hours of sunshine per day.
August temperatures in Portland
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 Portland in August 2025.
Other monthly averages
Best places to visit in August
Portland weather stats
| Hottest month: | February | 23.2°C 73.8°F |
|---|---|---|
| Driest month: | February | 26mm 1ins |
| Sunniest month: | February | 9hrs |
| Coldest month: | July | 13.1°C 55.6°F |
| Wettest month: | July | 112mm 4.4ins |
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