Taking into account the local weather in Campina das Missões 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 76°F, while the coldest months are July and June with an average of 60°F. The rainiest months in Campina das Missões are October, May, November, and September, with each month seeing an average of 8 inches of rainfall.