January in Ust-Kamchatsk is the most freezing month of the year. In January, the weather in Ust-Kamchatsk is typically freezing. Average daily high temperature in January is about 8 degrees below zero. On average, Ust-Kamchatsk has 17 snowy, 7 sunny, 6 partly cloudy, and 1 cloudy day in January. The snowfalls are usually heavy. January as well as February, May, September, and October is considered the most uncomfortable time to visit Ust-Kamchatsk.