If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Zhangjiajie: The hottest months are usually August and July with an average temp of 76°F, while the coldest months are January and December with an average of 44°F. The rainiest months in Zhangjiajie are June, July, May, and April, with each month seeing an average of 11 inches of rainfall.