August in Seagrove Beach is the sunniest month of the year. In August, the weather in Seagrove Beach is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Seagrove Beach has 17 sunny, 8 partly cloudy, 5 rainy, and 1 cloudy day in August. The rains are usually moderate. August as well as July and September is considered the most comfortable time to visit Seagrove Beach.