July in Ust-Koksa is the rainiest and the warmest month of the year. In July, the weather in Ust-Koksa is typically warm. Average daily high temperature in July is about 18 degrees above zero. On average, Ust-Koksa has 21 rainy, 9 sunny, and 1 partly cloudy day in July. The rains are usually moderate. July as well as January, February, April, and May is considered the most uncomfortable time to visit Ust-Koksa.