weather in hilton head, sc
Average Weather in Hilton Head Island South Carolina, United States. In Hilton Head Island, the summers are hot and oppressive, the winters are cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42Â°F to 89Â°F and is rarely below 30Â°F or above 95Â°F.