August in Slavyanka is the rainiest, the cloudiest, and the warmest month of the year. In August, the weather in Slavyanka is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Slavyanka has 17 rainy, 6 cloudy, 5 partly cloudy, and 3 sunny days in August. The rains are usually heavy. August as well as March, April, May, and June is considered the most uncomfortable time to visit Slavyanka.