July in Port-au-Prince is the hottest month of the year. In July, the weather in Port-au-Prince is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Port-au-Prince has 23 rainy and 8 sunny days in July. The rains are usually heavy. July as well as March, April, May, and June is considered the most uncomfortable time to visit Port-au-Prince.