August in Eastsound is the warmest month of the year. In August, the weather in Eastsound is typically warm. Average daily high temperature in August is about 16 degrees above zero. On average, Eastsound has 18 sunny, 7 partly cloudy, 5 rainy, and 1 cloudy day in August. The rains are usually moderate. August as well as July is considered the most comfortable time to visit Eastsound.