Oslo weather
11-year climate averages (2015–2025), month by month
Oslo in september
Current month averages, based on 11 complete years of records (2015–2025). Read the full guide →
Oslo sits at 59°54′N 10°45′E in Norway, in Europe. Its climate profile is shaped by these coordinates — and the 11 complete years of records below (2015–2025) reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
Oslo weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Oslo.
Places that feel like Oslo in september
Oslo weather — FAQ
Q01Which month is warmest in Oslo?
Which month is warmest in Oslo?
July runs the highest averages in Oslo, with typical daytime highs of 21°C (71°F). Plan around midday and consider accommodation with reliable cooling.
Q02Which month is chilliest in Oslo?
Which month is chilliest in Oslo?
January brings the lowest averages, with daytime highs near -1°C (31°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q03When is the rainy season in Oslo?
When is the rainy season in Oslo?
July typically records the highest monthly rainfall — around 113mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q04How would you describe Oslo's weather?
How would you describe Oslo's weather?
Oslo, Norway has mild summers, freezing winters, moderate seasonal rainfall. You can read the detailed month-by-month breakdown on this page.