December in Rumburk is the windiest month of the year. In December, the weather in Rumburk is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Rumburk has 18 rainy, 9 cloudy, 3 sunny, and 1 snowy day in December. The rains are usually light. December as well as January, February, March, and May is considered the most uncomfortable time to visit Rumburk.