July in Phan Thiet is the rainiest and the cloudiest month of the year. In July, the weather in Phan Thiet is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Phan Thiet has 30 rainy and 1 sunny 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 Phan Thiet.