August in Kozyrevsk is the rainiest and the cloudiest month of the year. In August, the weather in Kozyrevsk is typically warm. Average daily high temperature in August is about 15 degrees above zero. On average, Kozyrevsk has 16 rainy, 7 partly cloudy, 5 cloudy, and 3 sunny days in August. The rains are usually heavy. August as well as January, February, May, and June is considered the most uncomfortable time to visit Kozyrevsk.