December in Svetlyy is the most freezing month of the year. In December, the weather in Svetlyy is typically freezing. Average daily high temperature in December is about 27 degrees below zero. On average, Svetlyy has 23 cloudy, 4 partly cloudy, 2 snowy, and 2 sunny days in December. The snowfalls are usually light. December as well as January, February, March, and May is considered the most uncomfortable time to visit Svetlyy.