Visiting local bars in Isla Marisol is better in good weather. These temperatures and rainfall averages can help you decide the best time for bar hopping. The hottest months are usually September and August with an average temp of 81°F, while the coldest months are January and December with an average of 76°F. The rainiest months in Isla Marisol are June, October, September, and August, with each month seeing an average of 10 inches of rainfall.