August in Playa Hermosa is the rainiest month of the year. In August, the weather in Playa Hermosa is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Playa Hermosa has 30 rainy and 1 sunny day in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Playa Hermosa.