July in Nanchang is the hottest month of the year. In July, the weather in Nanchang is typically hot. Average daily high temperature in July is about 33 degrees above zero. On average, Nanchang has 13 rainy, 6 sunny, 6 cloudy, and 6 partly cloudy days in July. The rains are usually heavy. July as well as January, February, March, and May is considered the most uncomfortable time to visit Nanchang.