December in Ostrov im. Belova is the windiest month of the year. In December, the weather in Ostrov im. Belova is typically freezing. Average daily high temperature in December is about 1 degree below zero. On average, Ostrov im. Belova has 15 snowy, 12 cloudy, 3 rainy, and 1 sunny day in December. The snowfalls are usually moderate.