May in Shien is the rainiest, the windiest, and the cloudiest month of the year. In May, the weather in Shien is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Shien has 17 rainy, 7 partly cloudy, 6 sunny, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Shien.