May in Falun is the rainiest month of the year. In May, the weather in Falun is typically warm. Average daily high temperature in May is about 13 degrees above zero. On average, Falun has 16 rainy, 7 sunny, 6 partly cloudy, and 2 cloudy days in May. The rains are usually moderate. May as well as March, April, October, and November is considered the most uncomfortable time to visit Falun.