If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Metis-sur-Mer: The hottest months are usually July and August with an average temp of 59°F, while the coldest months are January and February with an average of 19°F. The snowiest months in Metis-sur-Mer are March, January, February, and November, with each month seeing an average of 14 inches of snowfall.