September in Kodinsk is the rainiest month of the year. In September, the weather in Kodinsk is typically cold. Average daily high temperature in September is about 9 degrees above zero. On average, Kodinsk has 15 rainy, 8 cloudy, 6 sunny, and 1 partly cloudy day in September. The rains are usually light. September as well as January, February, April, and May is considered the most uncomfortable time to visit Kodinsk.