Weather will likely play an important role when you plan your trip to Lishui, and keep in mind that cheaper options are usually available when the weather isn't as good. 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.