Weather will likely play an important role when you plan your trip to São Vicente, and keep in mind that cheaper options are usually available when the weather isn't as good. 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 São Vicente are January, February, March, and December, with each month seeing an average of 12 inches of rainfall.