Other facts from our historical weather data: Which is the warmest month in Fjarland? 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 Fjarland? The coldest month is December with an average maximum temperature of -1°C (30°F). Which is the wettest month in Fjarland? December tops the wettest month list with 259mm (10.2 in) of rainfall. Which is the driest month in Fjarland? May is the driest month with 119mm (4.7 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.