Weather will likely play an important role when you plan your trip to Masset, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 56°F, while the coldest months are February and March with an average of 40°F. The rainiest months in Masset are January, November, October, and December, with each month seeing an average of 8 inches of rainfall.