What is the current water temperature in Hilton Head Island?

Q: What is the current water temperature in Hilton Head Island?

As of now, in Hilton Head Island, the water temperature is 19.42°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

United States > Hilton Head Island

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.

67.0

°F

April 9, 17:27

Trend:

stable

Yesterday:

67.0°F

Tomorrow:

66.6°F

Sunrise:

07:02

Sunset:

19:48

Day Length:

12 h. 46 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 67.0°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 0.6°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 fall 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 70.3°F on 2025, while the historical minimum was 62.8°F on 2018.

latest data

last year

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 67.3°F, with minimum temperature starting at 66.5°F, while the maximum might reach 68.4°F.

Daily water temperature in Hilton Head Island

Date	Current Year actual* / forecast**	last year	10 years average
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	64.5°F
Apr 3	66.0°F	65.4°F	64.8°F
Apr 4	67.2°F	66.7°F	64.9°F
Apr 5	68.2°F	67.2°F	65.4°F
Apr 6	68.6°F	67.9°F	65.9°F
Apr 7	68.3°F	69.4°F	66.3°F
Apr 8	67.0°F	68.4°F	66.1°F
Apr 9	67.0°F	70.3°F	66.4°F
Apr 10	66.6°F	69.0°F	66.0°F
Apr 11	66.5°F	69.1°F	65.9°F
Apr 12	66.8°F	69.3°F	66.2°F
Apr 13	67.3°F	69.3°F	66.7°F
Apr 14	67.8°F	68.8°F	67.2°F
Apr 15	68.1°F	68.7°F	67.5°F
Apr 16	68.4°F	67.9°F	67.8°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 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, 68.0°F in Spring, 83.7°F in Summer, and 74.2°F in Autumn.