July in Hong Kong is the hottest month of the year. In July, the weather in Hong Kong is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Hong Kong has 24 rainy, 5 sunny, 1 cloudy, 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 Hong Kong.