September in Goryachiye Klyuchi is the sunniest month of the year. In September, the weather in Goryachiye Klyuchi is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Goryachiye Klyuchi has 12 rainy, 7 sunny, 6 partly cloudy, and 5 cloudy days in September. The rains are usually heavy.