If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Sao Vicente: The hottest months are usually February and January with an average temp of 78°F, while the coldest months are July and June with an average of 69°F. The rainiest months in Sao Vicente are January, February, March, and December, with each month seeing an average of 12 inches of rainfall.