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 23 degrees above zero. On average, Gympie has 22 sunny, 5 partly cloudy, and 4 rainy days in August. The rains are usually moderate. August as well as July and September is considered the most comfortable time to visit Gympie.