The temperatures in Oslo in August are usually low and can range between 11°C and 20°C.
You can expect about 3 to 8 days of rain in Oslo 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 Oslo in August 2025.
If you’re planning to visit Oslo in the near future, we highly recommend that you review the 14 day weather forecast for Oslo before you arrive.
Temperatures
20° / 11°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
94
mm
Sun Hours
9.2
Hrs
