When you travel with your pet, keeping track of the weather can make the trip safe and fun for everyone. The hottest months are usually August and July with an average temp of 59°F, while the coldest months are February and January with an average of 27°F. The snowiest months in Les Îles-de-la-Madeleine are February, March, January, and April, with each month seeing an average of 13 inches of snowfall.