July in Chengdu is the sunniest and the hottest month of the year. In July, the weather in Chengdu is typically hot. Average daily high temperature in July is about 28 degrees above zero. On average, Chengdu has 25 rainy and 6 sunny days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Chengdu.