Planning for the weather is a good way to make your trip to Olímpia relaxing and enjoyable, especially when you're splurging. 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.