August in Ponta Grossa is the sunniest month of the year. In August, the weather in Ponta Grossa is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Ponta Grossa has 16 sunny, 7 rainy, 6 partly cloudy, and 2 cloudy days in August. The rains are usually heavy. August as well as July is considered the most comfortable time to visit Ponta Grossa.