May in Chemdal'sk is the rainiest and the windiest month of the year. In May, the weather in Chemdal'sk is typically cold. Average daily high temperature in May is about 9 degrees above zero. On average, Chemdal'sk has 19 rainy, 6 cloudy, 4 sunny, and 2 partly cloudy days in May. The rains are usually moderate. May as well as January, February, April, and September is considered the most uncomfortable time to visit Chemdal'sk.