January in Suzhou is the coldest month of the year. In January, the weather in Suzhou is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Suzhou has 13 sunny, 9 partly cloudy, 6 cloudy, and 3 rainy days in January. The rains are usually light. January as well as February, July, and August is considered the most uncomfortable time to visit Suzhou.