July in Xiamen is the hottest month of the year. In July, the weather in Xiamen is typically hot. Average daily high temperature in July is about 30 degrees above zero. On average, Xiamen has 24 rainy, 6 sunny, and 1 partly cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Xiamen.