September in Ust-Kara is the rainiest month of the year. In September, the weather in Ust-Kara is typically cold. Average daily high temperature in September is about 7 degrees above zero. On average, Ust-Kara has 15 rainy, 13 cloudy, and 2 sunny days in September. The rains are usually light. September as well as January, February, March, and June is considered the most uncomfortable time to visit Ust-Kara.