In September, the weather in Punta Cana is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Punta Cana has 14 rainy, 12 sunny, 3 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit Punta Cana.