Oslo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Oslo.
Climate overview of Oslo
During summer Oslo is pleasantly warm. Occasionally Oslo experience heat waves from May to August with temperatures up to 33°C (91°F). Oslo is not particularly rainy, but rain is seen throughout the year.
Oslo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oslo - and find the best time to visit.
Monthly Temperature in Oslo
In Oslo, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 22°C (72°F) in July, the warmest time of the year, to a very cold -1°C (30°F) during cooler months like January.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around -7°C (19°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Oslo
On average, Oslo receives a reasonable amount of rain/snowfall, with an annual precipitation of 982 mm (39 in). While rainfall varies throughout the year, each season offers its own charm. August brings wetter days averaging 112 mm (4.4 in) of precipitation, spread over 16 rainy days.
In contrast, the driest month March experiences a drier climate, with about 54 mm (2.1 in) of snow/rainfall spread across 14 snowy/rainy days. For more details, please visit our Oslo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Oslo
Seasonal changes in sunshine hours are quite dramatic in Oslo. While May receives considerable daily sunshine with up to 8.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Oslo
The mean water temperature over the year ranges from 2°C (36°F) in February to 16°C (61°F) in July.
Water temperature over the year
Humidity in Oslo by Month
The relative humidity is high throughout the year in Oslo.
The city experiences its highest humidity in November, reaching 86%. In May, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Oslo
The average wind speed over the year ranges from 1 m/s (2 knots) to 2 m/s (4 knots). It is lower in February and December and higher in January, March, April, May, June, July, August, September, October and November. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Oslo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: May, June and July
- Fewer rainy days: February, March, April, May and June
- Warmest water temperature: July and August, although the water may still feel cool.
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -7°C (19°F).
Frequently asked questions about the climate in Oslo
What is the best time to visit Oslo?
June, July and August typically offer the most optimal weather in Oslo. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Oslo has warm summers and very cold winters.
What temperatures can I expect in Oslo?
Daytime highs range from -1°C (30°F) in January to 22°C (72°F) in July. Nighttime lows range from -7°C (19°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Oslo get?
Annual rainfall is around 982 mm (39 in). August is the wettest month with 112 mm (4.4 in), while March is the driest with 54 mm (2.1 in).
How sunny is Oslo?
Oslo receives around 1,676 hours of sunshine per year. May is the sunniest month with 241 hours, while December is the cloudiest with just 39 hours.
Oslo 3-Day Forecast
Oslo on the map
Oslo is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Oslo
22°C (72°F) Kristiansand
20°C (68°F) Trondheim20°C (68°F) Stavanger
18°C (64°F) Bergen
19°C (66°F) Hemsedal
17°C (63°F) Tromsø17°C (63°F) Reine14°C (57°F) 
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