Weather is probably a major factor when you plan your trip to Guarapuava, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually December and January, with an average temperature of 20°C, while the coldest months are July and June, with an average of 14°C. The rainiest months in Guarapuava are January, October, December and February, with each month seeing an average of 227 mm of rainfall.