If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Gonçalves: The hottest months are usually December and January with an average temp of 67°F, while the coldest months are July and June with an average of 58°F. The rainiest months in Gonçalves are January, December, February, and November, with each month seeing an average of 12 inches of rainfall.