In October, the weather in Ust-Kamchatsk is typically cold. Average daily high temperature in October is about 6 degrees above zero. On average, Ust-Kamchatsk has 12 rainy, 9 partly cloudy, 8 sunny, and 2 cloudy days in October. The rains are usually heavy. October as well as May, June, August, and September is considered the most uncomfortable time to visit Ust-Kamchatsk.