May in Storuman is the rainiest month of the year. In May, the weather in Storuman is typically cold. Average daily high temperature in May is about 9 degrees above zero. On average, Storuman has 15 rainy, 6 cloudy, 5 sunny, and 5 partly cloudy days in May. The rains are usually light. May as well as April, June, August, and September is considered the most uncomfortable time to visit Storuman.