All data are in degrees Fahrenheit

en

Water temperature in Hilton Head Island

Detailed information about the current water temperature in Hilton Head Island. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Hilton Head Island now

86.1

°F

July 15, 13:25

Trend:

stable

Yesterday:

86.3°F

Tomorrow:

86.1°F

Sunrise:

06:27

Sunset:

20:31

Day Length:

14 h. 4 min.

Hilton Head Island in July

Minimum:

49.0°F

Average:

55.7°F

Maximum:

62.6°F

Sea water temperature in Hilton Head Island today

As of now, in Hilton Head Island, the water temperature is 86.1°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.9°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 87.2°F on 2024, while the historical minimum was 82.9°F on 2021.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Hilton Head Island

Date Current Year

actual* / forecast**

last year 10 years average
Jul 1 84.9°F 85.7°F 83.8°F
Jul 2 85.0°F 84.9°F 83.8°F
Jul 3 85.3°F 85.1°F 84.2°F
Jul 4 85.5°F 84.5°F 84.3°F
Jul 5 85.7°F 85.0°F 84.5°F
Jul 6 86.2°F 84.4°F 84.7°F
Jul 7 86.0°F 84.1°F 84.6°F
Jul 8 86.0°F 84.3°F 84.7°F
Jul 9 86.0°F 84.4°F 84.8°F
Jul 10 86.4°F 85.0°F 84.9°F
Jul 11 86.5°F 85.0°F 85.0°F
Jul 12 87.0°F 84.2°F 85.1°F
Jul 13 86.4°F 83.9°F 85.1°F
Jul 14 86.3°F 84.6°F 85.2°F
Jul 15 86.1°F 84.6°F 85.2°F
Jul 16 86.1°F 85.5°F 85.3°F
Jul 17 86.3°F 85.3°F 85.4°F
Jul 18 86.3°F 85.6°F 85.4°F
Jul 19 86.3°F 85.1°F 85.4°F
Jul 20 86.4°F 86.8°F 85.5°F
Jul 21 86.6°F 86.5°F 85.7°F
Jul 22 86.5°F 86.9°F 85.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Hilton Head Island by month

In Hilton Head Island, the months May through October offer comfortable swimming conditions, which amounts to 164 swimming days.
The warmest water in Hilton Head Island was recorded on August 1, 2025, reaching a 88.8°F. While the coldest temperature occurred on January 24, 2025, dipping to 44.6°F. The average readings by season are 55.9°F in Winter, 68.0°F in Spring, 83.7°F in Summer, and 74.2°F in Autumn.