Weather will likely play an important role when you plan your trip to Quathiaski Cove, 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 60°F, while the coldest months are February and December with an average of 36°F. The rainiest months in Quathiaski Cove are November, January, December, and October, with each month seeing an average of 12 inches of rainfall.