Other facts from our historical weather data: When is winter in Havre aux Maisons? The coldest season / winter is in the following months: January, February, March and December. Which is the warmest month in Havre aux Maisons? August has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Havre aux Maisons? The coldest month is February with an average maximum temperature of -2°C (28°F). Which is the wettest month in Havre aux Maisons? December tops the wettest month list with 135mm (5.3 in) of rainfall. Which is the driest month in Havre aux Maisons? July is the driest month with 86mm (3.4 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.