Taking the local weather in Passos Maia into account can help you maximise your time at the pool during your trip. The hottest months are usually December and January, with an average temperature of 20°C, while the coldest months are July and June, with an average of 13°C. The rainiest months in Passos Maia are October, January, December and September, with each month seeing an average of 237 mm of rainfall.