May in Punta Cana is the cloudiest month of the year. In May, the weather in Punta Cana is typically warm. Average daily high temperature in May is about 27 degrees above zero. On average, Punta Cana has 16 rainy, 9 sunny, and 6 partly cloudy days in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit Punta Cana.