August in Sumbe is the sunniest month of the year. In August, the weather in Sumbe is typically warm. Average daily high temperature in August is about 16 degrees above zero. On average, Sumbe has 16 partly cloudy, 10 sunny, 4 rainy, and 1 cloudy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Sumbe.