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

75.9

°F

May 10, 11:01

Trend:

decreasing

Yesterday:

76.1°F

Tomorrow:

75.9°F

Sunrise:

06:29

Sunset:

20:10

Day Length:

13 h. 41 min.

Hilton Head Island in May

Minimum:

50.3°F

Average:

57.1°F

Maximum:

64.5°F

Sea water temperature in Hilton Head Island today

As of now, in Hilton Head Island, the water temperature is 75.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.1°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

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 76.9°F on 2024, while the historical minimum was 70.6°F on 2020.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 76.9°F, with minimum temperature starting at 75.9°F, while the maximum might reach 77.9°F.

Daily water temperature in Hilton Head Island

Date Current Year

actual* / forecast**

last year 10 years average
Apr 26 72.6°F 69.6°F 69.9°F
Apr 27 74.4°F 70.3°F 70.4°F
Apr 28 74.3°F 69.7°F 70.4°F
Apr 29 73.4°F 71.1°F 71.1°F
Apr 30 73.6°F 71.2°F 71.0°F
May 1 73.5°F 71.0°F 71.5°F
May 2 74.1°F 72.8°F 71.9°F
May 3 73.6°F 73.5°F 72.2°F
May 4 74.3°F 73.8°F 72.8°F
May 5 75.3°F 75.5°F 73.4°F
May 6 75.4°F 77.0°F 73.4°F
May 7 75.3°F 75.8°F 73.5°F
May 8 75.4°F 76.2°F 73.3°F
May 9 76.1°F 76.7°F 73.0°F
May 10 75.9°F 76.9°F 72.8°F
May 11 75.9°F 76.9°F 72.8°F
May 12 76.4°F 77.4°F 73.3°F
May 13 76.7°F 77.7°F 73.6°F
May 14 76.9°F 78.0°F 73.9°F
May 15 77.3°F 75.8°F 74.2°F
May 16 77.5°F 76.1°F 74.4°F
May 17 77.9°F 76.1°F 74.8°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 162 swimming days.
The warmest water in Hilton Head Island was recorded on August 22, 2023, reaching a 87.7°F. While the coldest temperature occurred on January 24, 2025, dipping to 44.6°F. The average readings by season are 56.6°F in Winter, 67.8°F in Spring, 83.6°F in Summer, and 74.4°F in Autumn.