January in Jiujiang is the coldest month of the year. In January, the weather in Jiujiang is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Jiujiang has 9 sunny, 8 rainy, 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 Jiujiang.