December in Bamberg is the rainiest, the windiest, and the cloudiest month of the year. In December, the weather in Bamberg is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Bamberg has 23 rainy, 5 cloudy, and 3 sunny days in December. The rains are usually moderate. December as well as January and February is considered the most uncomfortable time to visit Bamberg.