Weather will likely play an important role when you plan your trip to Jaragua do Sul, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and February with an average temp of 74°F, while the coldest months are July and June with an average of 62°F. The rainiest months in Jaragua do Sul are January, February, March, and December, with each month seeing an average of 9 inches of rainfall.