If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Barra Velha: The hottest months are usually February and January with an average temp of 76°F, while the coldest months are July and August with an average of 68°F. The rainiest months in Barra Velha are January, February, March, and December, with each month seeing an average of 11 inches of rainfall.