If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Catanduva: The hottest months are usually September and October with an average temp of 78°F, while the coldest months are July and June with an average of 69°F. The rainiest months in Catanduva are January, December, February, and March, with each month seeing an average of 9 inches of rainfall.