December weather forecast in Longyearbyen

December in Longyearbyen is the snowiest month of the year. In December, the weather in Longyearbyen is typically freezing. Average daily high temperature in December is about 9 degrees below zero. On average, Longyearbyen has 13 cloudy, 11 snowy, 5 partly cloudy, and 2 sunny days in December. The snowfalls are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Longyearbyen.