July in Dachang is the rainiest and the hottest month of the year. In July, the weather in Dachang is typically hot. Average daily high temperature in July is about 30 degrees above zero. On average, Dachang has 23 rainy, 7 sunny, and 1 partly cloudy day in July. The rains are usually heavy. July as well as June and August is considered the most uncomfortable time to visit Dachang.