If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Cheyyur: The hottest months are usually May and June with an average temp of 88°F, while the coldest months are January and February with an average of 77°F. The rainiest months in Cheyyur are November, October, August, and December, with each month seeing an average of 7 inches of rainfall.