In December, the weather in Ungen is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Ungen has 13 cloudy, 7 sunny, 6 partly cloudy, 3 rainy, and 2 snowy days in December. The rains are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Ungen.