May in Xining is the rainiest month of the year. In May, the weather in Xining is typically warm. Average daily high temperature in May is about 14 degrees above zero. On average, Xining has 10 rainy, 7 sunny, 7 cloudy, and 7 partly cloudy days in May. The rains are usually light. May as well as February, March, April, and June is considered the most uncomfortable time to visit Xining.