October in Sestroretsk is the rainiest month of the year. In October, the weather in Sestroretsk is typically cold. Average daily high temperature in October is about 7 degrees above zero. On average, Sestroretsk has 19 rainy, 10 cloudy, and 2 sunny days in October. The rains are usually moderate. October as well as March, April, and November is considered the most uncomfortable time to visit Sestroretsk.