August in Hardeeville is the rainiest month of the year. In August, the weather in Hardeeville is typically hot. Average daily high temperature in August is about 31 degrees above zero. On average, Hardeeville has 22 rainy, 8 sunny, and 1 partly cloudy day in August. The rains are usually heavy. August as well as July is considered the most uncomfortable time to visit Hardeeville.