January in Bochum is the coldest month of the year. In January, the weather in Bochum is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Bochum has 14 rainy, 10 cloudy, 4 partly cloudy, and 3 sunny days in January. The rains are usually heavy. January as well as February, March, November, and December is considered the most uncomfortable time to visit Bochum.