In May, the weather in Thang Kwian is typically hot. Average daily high temperature in May is about 32 degrees above zero. On average, Thang Kwian has 25 rainy, 3 partly cloudy, 2 sunny, and 1 cloudy day in May. The rains are usually heavy. May as well as April, June, July, and August is considered the most uncomfortable time to visit Thang Kwian.