Oslo Weather

Thanks to that phenomenon the climate is mild, especially considering its location. Boating and fishing and other summer activities are in full bloom around the city. Summer temperatures stay in the high 70s during the day and in the 50s at night. Winter brings temperatures below freezing, but the average temperature is around 40 degrees. Spring and fall are drop dead gorgeous in Oslo. Daytime temperatures are in the high 50s to low 60s and at night they drop into the 40s.