Taking into account the local weather in Tres Banderas is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually May and June with an average temp of 79°F, while the coldest months are January and December with an average of 73°F. The rainiest months in Tres Banderas are November, October, September, and August, with each month seeing an average of 11 inches of rainfall.