Planning for the weather is a good way to make your trip to Yulong relaxing and enjoyable, especially when you’re splurging. The hottest months are usually May and June with an average temp of 62°F, while the coldest months are January and December with an average of 43°F. The rainiest months in Yulong are August, July, June, and September, with each month seeing an average of 10 inches of rainfall.