August in Rockhampton is the sunniest month of the year. In August, the weather in Rockhampton is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Rockhampton has 29 sunny, 1 rainy, and 1 partly cloudy day in August. August as well as April, May, July, and September is considered the most comfortable time to visit Rockhampton.