Other facts from our historical weather data: When is winter in Himmersundet? The coldest season / winter is in the following months: January, February, March and December. Which is the warmest month in Himmersundet? July has an average maximum temperature of 21°C (70°F) and is the warmest month of the year. Which is the coldest month in Himmersundet? The coldest month is February with an average maximum temperature of -2°C (28°F). Which is the wettest month in Himmersundet? July tops the wettest month list with 89mm (3.5 in) of rainfall. Which is the driest month in Himmersundet? March is the driest month with 42mm (1.7 in) of precipitation. Which is the sunniest month in Himmersundet? July is the sunniest month with an average of 289 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.