September in Puerto Plata is the rainiest and the hottest month of the year. In September, the weather in Puerto Plata is typically hot. Average daily high temperature in September is about 31 degrees above zero. On average, Puerto Plata has 14 rainy, 12 sunny, 3 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as May and October is considered the most uncomfortable time to visit Puerto Plata.