May in Ust-Kamenogorsk is the windiest month of the year. In May, the weather in Ust-Kamenogorsk is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Ust-Kamenogorsk has 19 sunny, 7 partly cloudy, and 5 rainy days in May. The rains are usually light.