In September, the weather in Syktyvkar is typically warm. Average daily high temperature in September is about 10 degrees above zero. On average, Syktyvkar has 18 rainy, 10 cloudy, 1 sunny, and 1 partly cloudy day in September. The rains are usually moderate. September as well as January, February, April, and October is considered the most uncomfortable time to visit Syktyvkar.