Planning for the weather is an important factor for making your trip to Wuyishan a success, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 24°C, while the coldest months are January and December, with an average of 8°C. The rainiest months in Wuyishan are June, May, July and August, with each month seeing an average of 480 mm of rainfall.