In August, the weather in Sumon Kholchuk is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Sumon Kholchuk has 20 rainy, 8 sunny, and 3 partly cloudy days in August. The rains are usually heavy. August as well as January, February, July, and December is considered the most uncomfortable time to visit Sumon Kholchuk.