The temperatures in Oulu in August are usually low and can range between 11°C and 18°C.
You can expect about 3 to 8 days of rain in Oulu during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Oulu in August 2025.
If you’re planning to visit Oulu in the near future, we highly recommend that you review the 14 day weather forecast for Oulu before you arrive.
Temperatures
18° / 11°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
101
mm
Sun Hours
9.0
Hrs
