If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Uthamapalayam: The hottest months are usually April and May with an average temp of 81°F, while the coldest months are January and December with an average of 74°F. The rainiest months in Uthamapalayam are October, November, August, and December, with each month seeing an average of 7 inches of rainfall.