If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Bilaspur: The hottest months are usually May and April with an average temp of 91°F, while the coldest months are January and December with an average of 72°F. The rainiest months in Bilaspur are August, July, September, and June, with each month seeing an average of 14 inches of rainfall.