August in Playa del Carmen is the hottest month of the year. In August, the weather in Playa del Carmen is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Playa del Carmen has 18 rainy and 13 sunny days in August. The rains are usually heavy. August as well as June, July, September, and October is considered the most uncomfortable time to visit Playa del Carmen.