August in Phú Quốc is the cloudiest month of the year. In August, the weather in Phú Quốc is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Phú Quốc has 28 rainy and 3 cloudy days in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Phú Quốc.