May in Ust'-Kuyga is the cloudiest month of the year. In May, the weather in Ust'-Kuyga is typically freezing. Average daily high temperature in May is about 1 degree above zero. On average, Ust'-Kuyga has 24 cloudy, 3 snowy, 2 rainy, 1 sunny, and 1 partly cloudy day in May. The snowfalls are usually light.