Hilton Head Island — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Hilton Head Island (South Carolina, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Hilton Head Island help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Hilton Head Island in the Atlantic Ocean today is 29°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Hilton Head Island has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Hilton Head Island will be 28.1°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 20 | 27.8°C | 27.0°C | |
| JUN 21 | 27.8°C | 27.0°C | |
| JUN 22 | 27.7°C | 27.3°C | |
| JUN 23 | 27.7°C | 27.0°C | |
| JUN 24 | 28.0°C | 27.5°C | |
| JUN 25 | 28.2°C | 27.8°C | |
| JUN 26 | 28.3°C | 27.5°C | |
| JUN 27 | 28.2°C | 27.8°C | |
| JUN 28 | 28.8°C | 27.8°C | 28.8°C |
| JUN 29 | 26.3°C | 28.7°C | |
| JUN 30 | 26.0°C | 28.6°C | |
| JUL 1 | 27.8°C | 28.5°C | |
| JUL 2 | 28.3°C | 28.4°C | |
| JUL 3 | 28.0°C | 28.3°C | |
| JUL 4 | 27.8°C | 28.2°C | |
| JUL 5 | 28.0°C | 28.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Hilton Head Island, on the South Carolina coast, offers a mild maritime climate and Atlantic waters that vary noticeably through the year. Winter sea temperatures typically sit between 12 °C and 16 °C, making unprotected swimming brisk for most people. Spring sees a steady rise, with waters commonly in the 15 °C to 22 °C range as air temperatures warm and daylight increases. Summer brings the warmest conditions, with surface temperatures generally between 24 °C and 29 °C, peaking in late July and August. In autumn the water cools gradually, often ranging from about 20 °C to 25 °C through September to November. Local tidal flats, inlets and estuaries can heat or cool more quickly than the open ocean, so temperatures can vary slightly by location around the island.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 11°C | 13°C | 17°C |
| February | 11°C | 13°C | 16°C |
| March | 12°C | 15°C | 19°C |
| April | 15°C | 19°C | 22°C |
| May | 19°C | 23°C | 27°C |
| June | 21°C | 26°C | 30°C |
| July | 26°C | 28°C | 31°C |
| August | 27°C | 29°C | 32°C |
| September | 24°C | 27°C | 31°C |
| October | 20°C | 24°C | 28°C |
| November | 14°C | 19°C | 23°C |
| December | 11°C | 15°C | 19°C |
* Click on a month to view detailed water temperature data.
Hilton Head Island: Weather Forecast
June 29
June 30
July 1
Location, Beaches & Local Information
Nearby Beaches & Facilities
Singleton Beach
Burkes Beach Access
Bradley Beach
Chaplin Community Park
Driessen Beach Park
Folly Field Beach
Folly Field Beach Park
Islanders Beach Park
Coligny Beach Park
Swimming Conditions
These seasonal patterns shape swimming and beach holiday opportunities on Hilton Head. The warmest months, essentially June through September, provide the most comfortable ocean swimming without thermal protection and support a full complement of lifeguard-supervised beaches, rental options and water-sport operators. Shoulder seasons can still be pleasant for cautious swimmers, with many visitors opting for short swims, paddleboarding or kayak trips in calmer, shallower waters where temperatures may feel milder. In cooler months swimmers often use wetsuits or choose pools and sheltered estuaries for longer sessions. Beach conditions are generally family-friendly with gentle surf, but visitors should remain mindful of changing tides, occasional rip currents and seasonal marine life such as jellyfish. Overall, Hilton Head suits a range of beach holidays from active water sport vacations in summer to quieter off-season escapes with shorter swims and coastal exploration.