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 32 degrees above zero. On average, Nanchang has 21 rainy, 6 sunny, 2 cloudy, and 2 partly cloudy days in July. The rains are usually heavy. July as well as March, June, and August is considered the most uncomfortable time to visit Nanchang.