January in Hangzhou is the coldest month of the year. In January, the weather in Hangzhou is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Hangzhou has 9 rainy, 8 sunny, 8 partly cloudy, and 6 cloudy days in January. The rains are usually heavy. January as well as February, March, June, and July is considered the most uncomfortable time to visit Hangzhou.