September in Ruem is the rainiest month of the year. In September, the weather in Ruem is typically warm. Average daily high temperature in September is about 14 degrees above zero. On average, Ruem has 16 rainy, 9 cloudy, 4 sunny, and 1 partly cloudy day in September. The rains are usually moderate. September as well as January, April, October, and November is considered the most uncomfortable time to visit Ruem.