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

83.6

°F

June 23, 11:20

Trend:

increasing

Yesterday:

81.4°F

Tomorrow:

83.7°F

Sunrise:

06:17

Sunset:

20:33

Day Length:

14 h. 16 min.

Hilton Head Island in June

Minimum:

49.9°F

Average:

56.0°F

Maximum:

63.3°F

Sea water temperature in Hilton Head Island today

As of now, in Hilton Head Island, the water temperature is 83.6°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 1.5°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 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 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 85.1°F on 2025, while the historical minimum was 79.1°F on 2023.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 84.3°F, with minimum temperature starting at 83.7°F, while the maximum might reach 84.8°F.

Daily water temperature in Hilton Head Island

Date Current Year

actual* / forecast**

last year 10 years average
Jun 9 78.0°F 80.8°F 79.9°F
Jun 10 80.3°F 82.0°F 80.6°F
Jun 11 81.4°F 81.1°F 80.7°F
Jun 12 81.0°F 81.1°F 81.0°F
Jun 13 81.5°F 81.2°F 81.3°F
Jun 14 82.1°F 82.7°F 81.4°F
Jun 15 82.4°F 82.3°F 81.3°F
Jun 16 82.3°F 82.3°F 81.3°F
Jun 17 82.7°F 82.1°F 81.6°F
Jun 18 82.6°F 83.5°F 81.7°F
Jun 19 82.2°F 84.2°F 81.6°F
Jun 20 81.7°F 84.0°F 81.5°F
Jun 21 81.6°F 84.1°F 81.7°F
Jun 22 81.4°F 84.0°F 81.7°F
Jun 23 83.6°F 85.1°F 82.1°F
Jun 24 83.7°F 84.7°F 82.2°F
Jun 25 83.9°F 85.6°F 82.5°F
Jun 26 84.2°F 85.9°F 82.7°F
Jun 27 84.3°F 86.5°F 82.9°F
Jun 28 84.5°F 85.3°F 83.0°F
Jun 29 84.7°F 86.1°F 83.3°F
Jun 30 84.8°F 86.1°F 83.4°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 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.