December in Happy Valley-Goose Bay is the windiest month of the year. In December, the weather in Happy Valley-Goose Bay is typically freezing. Average daily high temperature in December is about 9 degrees below zero. On average, Happy Valley-Goose Bay has 15 snowy, 13 cloudy, and 3 sunny days in December. The snowfalls are usually moderate. December as well as January, February, April, and May is considered the most uncomfortable time to visit Happy Valley-Goose Bay.