If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Engenheiro Passos: The hottest months are usually February and January with an average temp of 72°F, while the coldest months are July and August with an average of 63°F. The rainiest months in Engenheiro Passos are January, December, March, and February, with each month seeing an average of 10 inches of rainfall.