September in Bulgunnyakhtakh is the rainiest month of the year. In September, the weather in Bulgunnyakhtakh is typically cold. Average daily high temperature in September is about 8 degrees above zero. On average, Bulgunnyakhtakh has 11 rainy, 10 cloudy, 6 sunny, and 3 partly cloudy days in September. The rains are usually moderate. September as well as January, February, March, and November is considered the most uncomfortable time to visit Bulgunnyakhtakh.