January in Bad Pyrmont is the cloudiest and the coldest month of the year. In January, the weather in Bad Pyrmont is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Bad Pyrmont has 19 rainy, 10 cloudy, and 2 sunny days in January. The rains are usually moderate. January as well as February, March, November, and December is considered the most uncomfortable time to visit Bad Pyrmont.