Taking into account the local weather in São José do Cerrito 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 67°F, while the coldest months are July and June with an average of 54°F. The rainiest months in São José do Cerrito are October, January, December, and September, with each month seeing an average of 8 inches of rainfall.