July in Douliu is the rainiest and the hottest month of the year. In July, the weather in Douliu is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Douliu has 25 rainy, 5 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as June, August, and September is considered the most uncomfortable time to visit Douliu.