Other facts from our historical weather data: Which is the warmest month in Bergen? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Bergen? The coldest month is February with an average maximum temperature of 5°C (41°F). Which is the wettest month in Bergen? December tops the wettest month list with 269mm (10.6 in) of rainfall. Which is the driest month in Bergen? May is the driest month with 127mm (5 in) of precipitation. Which is the sunniest month in Bergen? June is the sunniest month with an average of 193 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.