Oslo Weather in August
In August, Oslo averages a high of 21°C (70°F) and a low of 12°C (54°F), from 56 years of daily records (1971–2026).
21°C
Average high
70°F
12°C
Average low
54°F
34°C
Record high
94°F · August 3, 1982
4°C
Record low
39°F · August 31, 1987
What August Is Like in Oslo
- The August heat record, 34°C (94°F) on August 3, 1982, has stood for 44 years.
- The coldest August reading, 4°C (39°F) on August 31, 1987, has not been matched in 39 years.
- August is the wettest month of the year in Oslo, averaging 98 mm of rain.
- August in Oslo has become 1.1°C (2.0°F) warmer on average: the 2012–2026 average against 1970–1989.
At least 1 mm of rain falls on 36% of August days, and the month averages 98 mm in total.
Warmest: 2002 (25.6°C)Latest: 2026 (20.5°C)10-year averageLong-run average (20.9°C)
Look Up a Day in August
See the weather in Oslo on any August date, year by year.
Source: NOAA GHCN-Daily, Oslo Blindern (1971–2026). Averages cover 1971–2026. How we compute this