December in Haguenau is the rainiest month of the year. In December, the weather in Haguenau is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Haguenau has 21 rainy, 5 sunny, and 5 cloudy days in December. The rains are usually moderate. December as well as January, February, and November is considered the most uncomfortable time to visit Haguenau.