December in Sevastopol is the snowiest month of the year. In December, the weather in Sevastopol is typically freezing. Average daily high temperature in December is about 9 degrees below zero. On average, Sevastopol has 10 cloudy, 8 snowy, 8 partly cloudy, and 5 sunny days in December. The snowfalls are usually light. December as well as January and February is considered the most uncomfortable time to visit Sevastopol.