August in Pervomayskoye is the rainiest month of the year. In August, the weather in Pervomayskoye is typically warm. Average daily high temperature in August is about 25 degrees above zero. On average, Pervomayskoye has 15 rainy, 7 partly cloudy, 5 sunny, and 4 cloudy days in August. The rains are usually heavy. August as well as January, March, April, and May is considered the most uncomfortable time to visit Pervomayskoye.