Weather will likely play an important role when you plan your trip to Olímpia, but bear 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 temperature of 25°C, while the coldest months are June and July, with an average of 21°C. The rainiest months in Olímpia are January, December, February and November, with each month seeing an average of 220 mm of rainfall.