October in Ust-Isha is the rainiest month of the year. In October, the weather in Ust-Isha is typically cold. Average daily high temperature in October is about 6 degrees above zero. On average, Ust-Isha has 16 rainy, 6 sunny, 6 cloudy, and 3 partly cloudy days in October. The rains are usually moderate. October as well as January, February, April, and December is considered the most uncomfortable time to visit Ust-Isha.