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 7 degrees above zero. On average, Suzhou has 14 sunny, 8 rainy, 8 partly cloudy, and 1 cloudy day in January. The rains are usually light. January as well as June, July, and August is considered the most uncomfortable time to visit Suzhou.