If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Vale dos Vinhedos: The hottest months are usually January and February with an average temp of 71°F, while the coldest months are July and June with an average of 56°F. The rainiest months in Vale dos Vinhedos are October, September, January, and May, with each month seeing an average of 8 inches of rainfall.