August in Horlivka is the sunniest month of the year. In August, the weather in Horlivka is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Horlivka has 17 sunny, 6 rainy, 6 partly cloudy, and 2 cloudy days in August. The rains are usually light. August as well as September is considered the most comfortable time to visit Horlivka.