August in Sinegorsk is the rainiest and the warmest month of the year. In August, the weather in Sinegorsk is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Sinegorsk has 16 rainy, 6 sunny, 6 cloudy, and 3 partly cloudy days in August. The rains are usually heavy. August as well as January, February, April, and May is considered the most uncomfortable time to visit Sinegorsk.