January in Munich is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Munich is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Munich has 22 rainy, 6 cloudy, 2 sunny, and 1 snowy day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Munich.