Weather is probably a major factor when you plan your trip to Itabira, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and October with an average temp of 70°F, while the coldest months are July and August with an average of 64°F. The rainiest months in Itabira are December, November, January, and March, with each month seeing an average of 12 inches of rainfall.