May in Kozlovka is the rainiest month of the year. In May, the weather in Kozlovka is typically warm. Average daily high temperature in May is about 18 degrees above zero. On average, Kozlovka has 17 rainy, 9 sunny, and 5 partly cloudy days in May. The rains are usually moderate. May as well as January, April, September, and October is considered the most uncomfortable time to visit Kozlovka.