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

48.3

°F

February 1, 23:05

Trend:

stable

Yesterday:

48.8°F

Tomorrow:

48.5°F

Sunrise:

07:17

Sunset:

17:57

Day Length:

10 h. 40 min.

Hilton Head Island in February

Minimum:

50.6°F

Average:

56.8°F

Maximum:

66.7°F

Sea water temperature in Hilton Head Island today

As of now, in Hilton Head Island, the water temperature is 48.3°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 4.6°F lower 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 rise a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 57.4°F on 2016, while the historical minimum was 48.3°F on 2022.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 49.7°F, with minimum temperature starting at 48.5°F, while the maximum might reach 50.8°F.

Daily water temperature in Hilton Head Island

Date Current Year

actual* / forecast**

last year 10 years average
Jan 18 52.8°F 48.8°F 54.4°F
Jan 19 51.8°F 49.0°F 54.2°F
Jan 20 51.6°F 49.8°F 54.2°F
Jan 21 51.0°F 49.5°F 53.7°F
Jan 22 50.7°F 50.5°F 53.9°F
Jan 23 51.2°F 47.3°F 53.3°F
Jan 24 50.8°F 44.6°F 52.7°F
Jan 25 51.7°F 44.9°F 52.9°F
Jan 26 51.4°F 45.4°F 52.8°F
Jan 27 50.6°F 45.6°F 53.0°F
Jan 28 50.4°F 45.0°F 53.7°F
Jan 29 50.4°F 46.2°F 53.9°F
Jan 30 49.1°F 47.1°F 52.8°F
Jan 31 48.8°F 47.6°F 52.4°F
Feb 1 48.3°F 48.7°F 52.8°F
Feb 2 48.5°F 48.7°F 53.1°F
Feb 3 48.7°F 48.8°F 53.2°F
Feb 4 49.1°F 51.4°F 53.7°F
Feb 5 49.5°F 52.8°F 54.0°F
Feb 6 50.8°F 54.3°F 55.4°F
Feb 7 50.6°F 54.1°F 55.1°F
Feb 8 50.6°F 55.5°F 55.2°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 56.0°F in Winter, 67.9°F in Spring, 83.7°F in Summer, and 74.2°F in Autumn.