May in Arshan is the windiest month of the year. In May, the weather in Arshan is typically warm. Average daily high temperature in May is about 12 degrees above zero. On average, Arshan has 15 rainy, 7 partly cloudy, 6 sunny, and 3 cloudy days in May. The rains are usually moderate. May as well as January, February, April, and October is considered the most uncomfortable time to visit Arshan.