Oslo Weather by Month
Twelve months of Oslo, Norway weather — averages from 2006–2025.
Oslo's warmest month is July (average high 21.6°C (70.9°F)) and the coolest is January (-1.4°C (29.5°F)). The most rain falls in July (about 121 mm), and April is the driest (about 50 mm). June is the sunniest, with about 13.3 hours of sunshine a day.
Best months to visit Oslo
Ranked within Oslo's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
Oslo month by month
January
PoorHigh -1.4°C (29.5°F)
Low -6.3°C (20.7°F)
- Rainfall
- 76 mm (3 in)
- Rainy days
- 12 rainy days
- Sunshine
- 2.6 h sunshine / day
February
PoorHigh -0.1°C (31.8°F)
Low -5.7°C (21.7°F)
- Rainfall
- 60 mm (2.3 in)
- Rainy days
- 10 rainy days
- Sunshine
- 4.4 h sunshine / day
March
PoorHigh 4.5°C (40.1°F)
Low -2.9°C (26.8°F)
- Rainfall
- 53 mm (2.1 in)
- Rainy days
- 8 rainy days
- Sunshine
- 7.4 h sunshine / day
April
FairHigh 10.5°C (50.9°F)
Low 1.4°C (34.5°F)
- Rainfall
- 50 mm (2 in)
- Rainy days
- 8 rainy days
- Sunshine
- 10.2 h sunshine / day
May
GoodHigh 15.9°C (60.6°F)
Low 6.7°C (44.1°F)
- Rainfall
- 79 mm (3.1 in)
- Rainy days
- 12 rainy days
- Sunshine
- 11.9 h sunshine / day
June
GoodHigh 20°C (68°F)
Low 11.4°C (52.5°F)
- Rainfall
- 94 mm (3.7 in)
- Rainy days
- 12 rainy days
- Sunshine
- 13.3 h sunshine / day
July
GoodHigh 21.6°C (70.9°F)
Low 13.9°C (57°F)
- Rainfall
- 121 mm (4.7 in)
- Rainy days
- 14 rainy days
- Sunshine
- 12.3 h sunshine / day
August
GoodHigh 19.7°C (67.5°F)
Low 12.8°C (55°F)
- Rainfall
- 114 mm (4.5 in)
- Rainy days
- 15 rainy days
- Sunshine
- 10.2 h sunshine / day
September
GoodHigh 15.9°C (60.6°F)
Low 9.7°C (49.5°F)
- Rainfall
- 91 mm (3.6 in)
- Rainy days
- 11 rainy days
- Sunshine
- 7.7 h sunshine / day
October
FairHigh 9.5°C (49.1°F)
Low 4.8°C (40.6°F)
- Rainfall
- 92 mm (3.6 in)
- Rainy days
- 12 rainy days
- Sunshine
- 4.7 h sunshine / day
November
PoorHigh 4.3°C (39.7°F)
Low 0.6°C (33.1°F)
- Rainfall
- 83 mm (3.3 in)
- Rainy days
- 12 rainy days
- Sunshine
- 2.5 h sunshine / day
December
PoorHigh 0.2°C (32.4°F)
Low -4.1°C (24.6°F)
- Rainfall
- 71 mm (2.8 in)
- Rainy days
- 12 rainy days
- Sunshine
- 2 h sunshine / day
More Norway cities by month
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.