August in Gympie is the sunniest month of the year. In August, the weather in Gympie is typically warm. Average daily high temperature in August is about 20 degrees above zero. On average, Gympie has 27 sunny, 2 rainy, and 2 partly cloudy days in August. The rains are usually light. August as well as September is considered the most comfortable time to visit Gympie.