December in Kiruna is the cloudiest month of the year. In December, the weather in Kiruna is typically freezing. Average daily high temperature in December is about 7 degrees below zero. On average, Kiruna has 11 cloudy, 10 snowy, 8 partly cloudy, and 2 sunny days in December. The snowfalls are usually light. December as well as January, February, April, and May is considered the most uncomfortable time to visit Kiruna.