September weather forecast in Mülheim an der Ruhr

September in Mülheim an der Ruhr is the sunniest month of the year. In September, the weather in Mülheim an der Ruhr is typically warm. Average daily high temperature in September is about 19 degrees above zero. On average, Mülheim an der Ruhr has 12 rainy, 9 partly cloudy, 7 sunny, and 2 cloudy days in September. The rains are usually moderate.