If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Downtown Ubatuba: The hottest months are usually February and January with an average temp of 71°F, while the coldest months are July and June with an average of 62°F. The rainiest months in Downtown Ubatuba are January, December, February, and November, with each month seeing an average of 10 inches of rainfall.