Other facts from our historical weather data: When is winter in Baie-Comeau? The coldest season / winter is in the following months: January, February, March and December. Which is the warmest month in Baie-Comeau? 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 Baie-Comeau? The coldest month is January with an average maximum temperature of -8°C (18°F). Which is the wettest month in Baie-Comeau? October tops the wettest month list with 117mm (4.6 in) of rainfall. Which is the driest month in Baie-Comeau? February is the driest month with 68mm (2.7 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.