In March, the weather in Karlsruhe is typically warm. Average daily high temperature in March is about 10 degrees above zero. On average, Karlsruhe has 12 rainy, 9 cloudy, 6 partly cloudy, and 4 sunny days in March. The rains are usually moderate. March as well as January, February, November, and December is considered the most uncomfortable time to visit Karlsruhe.