Taking into account the local weather in Veinticinco de Mayo is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually January and February with an average temp of 76°F, while the coldest months are July and June with an average of 61°F. The rainiest months in Veinticinco de Mayo are October, January, May, and December, with each month seeing an average of 9 inches of rainfall.