Weather is probably a major factor when you plan your trip to Manhuaçu, 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 70°F, while the coldest months are July and August with an average of 63°F. The rainiest months in Manhuaçu are December, November, January, and October, with each month seeing an average of 9 inches of rainfall.