Other facts from our historical weather data: When is winter in Flaine? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Flaine? July has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Flaine? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Flaine? May tops the wettest month list with 182mm (7.2 in) of rainfall. Which is the driest month in Flaine? October is the driest month with 129mm (5.1 in) of precipitation. Which is the sunniest month in Flaine? July is the sunniest month with an average of 275 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.