In May, the weather in Phú Quốc is typically hot. Average daily high temperature in May is about 29 degrees above zero. On average, Phú Quốc has 27 rainy, 2 sunny, 1 cloudy, and 1 partly cloudy day in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit Phú Quốc.