Taking into account the local weather in San Antonio de Palmito is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually February and March with an average temp of 82°F, while the coldest months are November and December with an average of 79°F. The rainiest months in San Antonio de Palmito are August, May, October, and September, with each month seeing an average of 10 inches of rainfall.