August in Sumbawa Besar is the sunniest month of the year. In August, the weather in Sumbawa Besar is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Sumbawa Besar has 16 sunny, 13 partly cloudy, and 2 rainy days in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Sumbawa Besar.