- Temperature
- -3 to 18°C
Updated July 2026 · Sources cited: climatestotravel.com, weather-and-climate.com
Good to know
Good to Know
- Summer (June–August) offers the most comfortable weather for exploring the city, though expect 100–112 mm of monthly rainfall even during these months.
- Winter darkness is dramatic—December has only 6.1 hours of daylight—but this is when Oslo's festive atmosphere and winter activities peak.
- Snow is common from October through April, making winter footwear and clothing essential for much of the year.
- Despite being at a high northern latitude, Oslo's winter temperatures are moderate for its location, influenced by the Gulf Stream, though you should prepare for frost from late October through March.
- Rain occurs year-round; Oslo is not particularly rainy compared to some European cities, but carry rain gear any season.
Seasons
- Description Best
- Summer is mild or pleasantly warm with cool nights. Long daylight hours and most sunshine hours per day.
- Description Worst
- Winter is very cold and dark, with short days and frequent snowfall. November marks the transition into winter with short daylight.
Best Months
- June
- July
- August
Worst Months
- November
- December
- January
- February
Daylight
- Longest Day Hours
- 18.7
- Longest Day Month
- June
- Shortest Day Hours
- 6.1
- Shortest Day Month
- December
- Notes
- Significant seasonal variation in daylight hours due to high latitude.
Snowfall
- Occurs
- Yes
- Season
- Late October through mid-April
- Average Snow Days Per Year
- 80
- Notes
- First snowfalls typically appear in October. Snow persists through winter and spring.
Temperature
Peak Season
- Season
- Summer (June–August)
- Average High Celsius
- 18
- Average High Fahrenheit
- 64
- Notes
- Occasionally reaches 28–30°C (82–86°F) during heat waves.
Off Peak Season
- Season
- Winter (November–March)
- Average Low Celsius
- -3
- Average Low Fahrenheit
- 27
- Notes
- Temperatures typically range from -2°C (28°F) to 0°C (28–32°F). Only occasionally falls below -15°C (5°F).
Precipitation
- Pattern
- Rain is distributed throughout the year. Summer and autumn are the rainiest seasons.
- Driest Month
- March
- Wettest Month
- August
- Annual Total Mm
- 982
- Driest Month Mm
- 54
- Wettest Month Mm
- 112
- Annual Total Inches
- 39
- Driest Month Inches
- 2.1
- Wettest Month Inches
- 4.4
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Oslo
Data last updated July 2026 · Verify anything important.