May in Spittal an der Drau is the rainiest month of the year. In May, the weather in Spittal an der Drau is typically warm. Average daily high temperature in May is about 12 degrees above zero. On average, Spittal an der Drau has 21 rainy, 7 sunny, and 3 partly cloudy days in May. The rains are usually heavy. May as well as March, April, June, and September is considered the most uncomfortable time to visit Spittal an der Drau.