August in Nambour is the sunniest month of the year. In August, the weather in Nambour is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Nambour has 26 sunny, 4 rainy, and 1 partly cloudy day in August. The rains are usually light. August as well as September is considered the most comfortable time to visit Nambour.