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Oslo weather in August 2025
Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Oslo in August. Check more long-term weather averages for Oslo in August before you book your next holiday to Norway in 2025/2026.
- 2020°C max day temperature
- 7 hours of sunshine per day
- 1616 days with some rainfall
- 1010°C min night temperature
- 1616 hours of daylight per day
- 0No heat & humidity
- 9191 mm of monthly rainfall
- 44 (Moderate) UV index
- 1818°C sea temperature
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The August weather guide for Norway (Oslo) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Norway
How hot is it in Oslo in August?
Daytime temperatures usually reach 20°C in Oslo in August, falling to 10°C at night.
How sunny is it in Oslo in August?
There are normally 7 hours of bright sunshine each day in Oslo in August - that's 43% of daylight hours.
How warm is the sea around Oslo in August?
The average sea temperature around Oslo in August is 18°C.
Does it rain in Oslo in August?
There are usually 16 days with some rain in Oslo in August and the average monthly rainfall is 91mm.
Oslo August sunrise & sunset times
Browse the sunrise and sunset times for Oslo in August 2025. Select a month to view Oslo sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 03:59 | 20:46 |
Saturday, 16th August 2025 | 04:34 | 20:06 |
Sunday, 31st August 2025 | 05:10 | 19:23 |
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