You'll likely spend much of your trip indoors, but if you're planning to venture beyond the casino, looking at local weather trends is a good idea. The hottest months are usually March and April with an average temp of 83°F, while the coldest months are January and December with an average of 80°F. The rainiest months in Isla de Coiba are August, May, July, and October, with each month seeing an average of 22 inches of rainfall.