Oslo Climate by Month

Many people picture Oslo as being a cold place to visit, but Oslo's temperatures are rather moderate for a city located as far north as it is. The average winter temperature in Oslo is only about -2°C, which is a bit warmer than the winter temperatures of most American and some European cities. Visitors however should be prepared for frost from late October until late March/early April. Only occasionally there is deep frost below -15°C.

During summer Oslo is pleasantly warm. Occasionally Oslo experience heat waves from May to August with temperatures up to 33°C. Oslo is not particularly rainy, but rain is seen throughout the year.

The graphs below provide an overview of the climate in Oslo (Oslo County), Norway. They present long-term patterns and averages of weather conditions over a 30-year period.

The best time of year to visit Oslo in Norway

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

When is winter in Oslo?
The coldest season / winter is in the following months: January, February and December.

Which is the warmest month in Oslo?
July has an average maximum temperature of 22°C and is the warmest month of the year.

Which is the coldest month in Oslo?
The coldest month is February with an average maximum temperature of -1°C.

Which is the wettest month in Oslo?
August tops the wettest month list with 112 mm of rainfall.

Which is the driest month in Oslo?
March is the driest month with 54 mm of precipitation.

Which is the sunniest month in Oslo?
May is the sunniest month with an average of 241 hours of sunshine.

No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.