Other facts from our historical weather data: Which months have the greatest rainfall in Flåm? Most rainfall (rainy season) is seen in January, February and December. Which is the warmest month in Flåm? July has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Flåm? The coldest month is February with an average maximum temperature of -2°C (28°F). Which is the wettest month in Flåm? January tops the wettest month list with 173mm (6.8 in) of rainfall. Which is the driest month in Flåm? May is the driest month with 93mm (3.7 in) of precipitation. 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.