September in Gaptsakh is the rainiest month of the year. In September, the weather in Gaptsakh is typically warm. Average daily high temperature in September is about 24 degrees above zero. On average, Gaptsakh has 27 sunny, 2 rainy, and 1 partly cloudy day in September. The rains are usually light. September as well as May and June is considered the most comfortable time to visit Gaptsakh.