December in Pirmasens is the rainiest and the windiest month of the year. In December, the weather in Pirmasens is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Pirmasens has 23 rainy, 4 cloudy, 3 sunny, and 1 partly cloudy day in December. The rains are usually moderate. December as well as January, February, and November is considered the most uncomfortable time to visit Pirmasens.