Hilton Head Island, SC has a warm and humid subtropical climate with mild winters and hot summers. The average annual temperature is around 74 °F (23°C) and the average high temperatures range from 57°F (14°C) in January to 90°F (32°C) in July and August. During the winter months, temperatures can reach as low as 32°F (0°C). Rainfall is abundant year-round, with an average of 49 inches (124 cm) annually. Summers are typically hot and humid, with occasional afternoon thunderstorms. Spring and fall are fairly mild seasons with temperatures ranging from mid-60s to mid-80s Fahrenheit (18-29°C). Snow is extremely rare on Hilton Head Island but can occur during typical winter storms in the surrounding areas.
Hilton Head Island, South Carolina gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Hilton Head Island averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 215 sunny days per year in Hilton Head Island. The US average is 205 sunny days.
Hilton Head Island gets some kind of precipitation, on average, 103 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 91 degrees
Winter Low: the January low is 39
Rain: averages 48 inches of rain a year
Snow: averages 0 inches of snow a year