In September, the weather in Svetlopolyansk is typically warm. Average daily high temperature in September is about 11 degrees above zero. On average, Svetlopolyansk has 14 rainy, 12 cloudy, 2 sunny, and 2 partly cloudy days in September. The rains are usually moderate. September as well as January, February, April, and October is considered the most uncomfortable time to visit Svetlopolyansk.