In September, the weather in Spittal an der Drau is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Spittal an der Drau has 13 rainy, 8 partly cloudy, 6 cloudy, and 3 sunny days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Spittal an der Drau.