In December, the weather in Svetlogorsk is typically freezing. Average daily high temperature in December is about 20 degrees below zero. On average, Svetlogorsk has 13 cloudy, 11 snowy, 4 sunny, and 3 partly cloudy 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 Svetlogorsk.