Taking into account the local weather in Uniao da Vitoria is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually January and December with an average temp of 69°F, while the coldest months are July and June with an average of 57°F. The rainiest months in Uniao da Vitoria are October, January, December, and February, with each month seeing an average of 8 inches of rainfall.