Plan your trip to the beach with a look at the seasons in L'Ile-du-Havre-Aubert: 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 L'Ile-du-Havre-Aubert are February, March, January, and April, with each month seeing an average of 13 inches of snowfall.