May in Zhangjiakou is the windiest month of the year. In May, the weather in Zhangjiakou is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, Zhangjiakou has 18 sunny, 11 partly cloudy, 1 rainy, and 1 cloudy day in May. May as well as June, July, August, and September is considered the most comfortable time to visit Zhangjiakou.