Weather in Oulu: August
| Average day temperature: | 64.0°F | |
| Average night temperature: | 53.8°F | |
| Sea water temperature: | 62.0°F | |
| Number of sunny days: | 10 days | |
| Day length: | 14.8 - 18.3 hours | |
| Number of rainy days: | 5 days | |
| Precipitation totals: | 2.6 in. | |
| more information | ||
forecast
| Oulu |
temperature
| Oulu |
Air temperature in August, °F
The highest day temperature during August of 2025 was 80°F. At the same time the lowest night temperature was 45°F. Daily and nightly averages during August were 62.5°F and 54.0°F.
Sea water temperature in Oulu in August, °F
The average sea water temperature in August of 2025 was 65.1°F. The highest and lowest sea temperatures during the month were 75.4°F and 57.6°F.
Number of sunny, partly cloudy and cloudy days in August is almost equal.
Precipitation total in August, in.
Precipitation total value in Oulu in August is 3.1 in. Other months of the year show relatively similar values.
The average wind speed value in August is 8.2 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 8.3.
Best time for vacation in Oulu
Oulu on a weather map

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