January in Changzhou is the coldest month of the year. In January, the weather in Changzhou is typically cold. Average daily high temperature in January is about 7 degrees above zero. On average, Changzhou has 11 sunny, 7 rainy, 7 partly cloudy, and 6 cloudy days in January. The rains are usually moderate. January as well as February, July, and August is considered the most uncomfortable time to visit Changzhou.