Weather will likely play an important role when you plan your trip to Isla Fuerte, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and July with an average temp of 83°F, while the coldest months are February and January with an average of 79°F. The rainiest months in Isla Fuerte are September, August, October, and June, with each month seeing an average of 12 inches of rainfall.