Planning for the weather is a good way to make your trip to Wuyishan relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August with an average temp of 75°F, while the coldest months are January and December with an average of 47°F. The rainiest months in Wuyishan are June, May, July, and August, with each month seeing an average of 19 inches of rainfall.