August in Pinamar is the rainiest month of the year. In August, the weather in Pinamar is typically warm. Average daily high temperature in August is about 13 degrees above zero. On average, Pinamar has 14 partly cloudy, 10 sunny, 4 rainy, and 3 cloudy days in August. The rains are usually moderate. August as well as June, July, and September is considered the most uncomfortable time to visit Pinamar.