All data are in degrees Fahrenheit

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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

65.1

°F

April 2, 16:51

Trend:

increasing

Yesterday:

63.5°F

Tomorrow:

65.4°F

Sunrise:

07:10

Sunset:

19:43

Day Length:

12 h. 33 min.

Hilton Head Island in April

Minimum:

50.2°F

Average:

56.5°F

Maximum:

66.2°F

Sea water temperature in Hilton Head Island today

As of now, in Hilton Head Island, the water temperature is 65.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 0.7°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. 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 68.8°F on 2020, while the historical minimum was 60.3°F on 2018.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 66.2°F, with minimum temperature starting at 65.4°F, while the maximum might reach 67.1°F.

Daily water temperature in Hilton Head Island

Date Current Year

actual* / forecast**

last year 10 years average
Mar 19 62.0°F 60.5°F 61.7°F
Mar 20 60.7°F 60.5°F 61.6°F
Mar 21 60.0°F 60.8°F 61.7°F
Mar 22 61.8°F 60.1°F 61.6°F
Mar 23 62.3°F 60.3°F 61.6°F
Mar 24 63.5°F 60.5°F 61.8°F
Mar 25 62.7°F 60.7°F 62.2°F
Mar 26 61.7°F 62.1°F 62.6°F
Mar 27 61.8°F 62.0°F 63.0°F
Mar 28 63.6°F 62.1°F 63.3°F
Mar 29 64.0°F 62.8°F 63.5°F
Mar 30 62.3°F 63.3°F 63.6°F
Mar 31 62.5°F 63.6°F 63.9°F
Apr 1 63.5°F 64.1°F 64.1°F
Apr 2 65.1°F 64.7°F 64.4°F
Apr 3 65.4°F 65.4°F 64.7°F
Apr 4 65.4°F 66.7°F 64.7°F
Apr 5 65.9°F 67.2°F 65.2°F
Apr 6 66.3°F 67.9°F 65.6°F
Apr 7 66.8°F 69.4°F 66.1°F
Apr 8 66.8°F 68.4°F 66.1°F
Apr 9 67.1°F 70.3°F 66.4°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 166 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, 67.9°F in Spring, 83.7°F in Summer, and 74.2°F in Autumn.