January in Berlin is the most freezing month of the year. In January, the weather in Berlin is typically freezing. Average daily high temperature in January is about 19 degrees below zero. On average, Berlin has 22 cloudy, 3 snowy, 3 sunny, and 3 partly cloudy days in January. The snowfalls are usually light. January as well as February, April, May, and September is considered the most uncomfortable time to visit Berlin.