If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Lishui: The hottest months are usually July and August with an average temp of 78°F, while the coldest months are January and December with an average of 48°F. The rainiest months in Lishui are June, May, July, and August, with each month seeing an average of 10 inches of rainfall.