Planning for the weather is a good way to make your trip to Ribeirao Preto relaxing and enjoyable, especially when you're splurging. The hottest months are usually September and October, with an average temperature of 24°C, while the coldest months are June and July, with an average of 20°C. The rainiest months in Ribeirao Preto are January, December, November and February, with each month seeing an average of 225 mm of rainfall.