July weather forecast in Hilton Head Island

July in Hilton Head Island is the hottest month of the year. In July, the weather in Hilton Head Island is typically hot. Average daily high temperature in July is about 30 degrees above zero. On average, Hilton Head Island has 16 rainy, 9 sunny, and 6 partly cloudy days in July. The rains are usually heavy. July as well as August is considered the most uncomfortable time to visit Hilton Head Island.