Plan your trip to the beach with a look at weather throughout the year in L'Ile-du-Havre-Aubert: The hottest months are usually August and July, with an average temperature of 15°C, while the coldest months are February and January, with an average of -3°C. The snowiest months in L'Ile-du-Havre-Aubert are February, March, January and April, with each month seeing an average of 32 cm of snowfall.