In December, the weather in Sos'va is typically freezing. Average daily high temperature in December is about 14 degrees below zero. On average, Sos'va has 20 cloudy, 8 snowy, 2 sunny, and 1 partly cloudy day in December. The snowfalls are usually light. December as well as January, February, April, and May is considered the most uncomfortable time to visit Sos'va.