December in Maniitsoq is the snowiest and the windiest month of the year. In December, the weather in Maniitsoq is typically freezing. Average daily high temperature in December is about 6 degrees below zero. On average, Maniitsoq has 11 snowy, 8 sunny, 8 partly cloudy, and 4 cloudy days in December. The snowfalls are usually moderate.