Oslo Weather in December
In December, Oslo averages a high of 1°C (33°F) and a low of -4°C (24°F), from 55 years of daily records (1971–2026).
1°C
Average high
33°F
-4°C
Average low
24°F
13°C
Record high
55°F · December 14, 1991
-21°C
Record low
-5°F · December 14, 1981
What December Is Like in Oslo
- December 2025 was the 2nd warmest December in 55 years of records, 4.2°C (7.6°F) above the long-run average.
- December in Oslo has become 1.9°C (3.4°F) warmer on average: the 2011–2025 average against 1970–1989.
- 6 of the 10 warmest Decembers on record in Oslo have come since 2011.
- The December heat record, 13°C (55°F) on December 14, 1991, has stood for 35 years.
At least 1 mm of rain falls on 32% of December days, and the month averages 54 mm in total.
Warmest: 2006 (4.8°C)Latest: 2025 (4.2°C)10-year averageLong-run average (0.6°C)
Look Up a Day in December
See the weather in Oslo on any December date, year by year.
Source: NOAA GHCN-Daily, Oslo Blindern (1971–2026). Averages cover 1971–2026. How we compute this