Oslo weather

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Usually in September
- 14
- 7
- 5
Weather by month
Now Today
- 17
- 2
5-day forecast

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The weather guide for Oslo, Norway shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Which is the hottest month in Oslo?

The hottest time of year in Oslo is normally July. Expect maximum daytime temperatures to reach 21°C.

Which month has the most rain in Oslo?

In terms of rainfall, September is usually the wettest month in Oslo with 94mm on average. There are normally 16 days in September with some rain.

When is it sunniest in Oslo?

The sunniest time of year in Oslo is normally June with bright sunshine on average for 45% of daylight hours; that's 8 hours of sunshine per day.