What is the current water temperature in Sullivans Island?

Q: What is the current water temperature in Sullivans Island?

As of now, in Sullivans Island, the water temperature is 11.82°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.

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Water temperature in Sullivans Island

Detailed information about the current water temperature in Sullivans 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.

53.3

°F

December 30, 13:39

Trend:

stable

Yesterday:

52.4°F

Tomorrow:

53.1°F

Sunrise:

07:22

Sunset:

17:23

Day Length:

10 h. 1 min.

Sullivans Island in January

Minimum:

50.1°F

Average:

58.4°F

Maximum:

67.7°F

Sea water temperature in Sullivans Island today

As of now, in Sullivans Island, the water temperature is 53.3°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 4.4°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall 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 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 67.5°F on 2015, while the historical minimum was 48.5°F on 2022.

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 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 54.0°F, with minimum temperature starting at 53.1°F, while the maximum might reach 54.5°F.

Daily water temperature in Sullivans Island

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	54.0°F	54.3°F	58.4°F
Jan 2	54.2°F	54.6°F	58.6°F
Jan 3	54.2°F	53.8°F	58.6°F
Jan 4	54.5°F	52.6°F	58.8°F
Jan 5	54.2°F	53.8°F	58.5°F
Jan 6	53.8°F	52.6°F	58.2°F
Dec 16	55.4°F	55.4°F	58.4°F
Dec 17	54.7°F	56.4°F	58.6°F
Dec 18	56.0°F	57.4°F	58.9°F
Dec 19	58.0°F	56.6°F	58.8°F
Dec 20	58.0°F	56.8°F	59.0°F
Dec 21	58.2°F	53.8°F	58.3°F
Dec 22	56.4°F	54.4°F	58.3°F
Dec 23	55.9°F	53.2°F	57.7°F
Dec 24	53.9°F	54.1°F	57.4°F
Dec 25	52.2°F	53.8°F	57.3°F
Dec 26	51.7°F	54.1°F	56.7°F
Dec 27	51.4°F	54.7°F	56.4°F
Dec 28	51.0°F	55.3°F	56.5°F
Dec 29	52.4°F	56.5°F	56.9°F
Dec 30	53.3°F	56.5°F	57.6°F
Dec 31	53.1°F	54.3°F	57.4°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 Sullivans Island by month

In Sullivans Island, the months May through October offer comfortable swimming conditions, which amounts to 156 swimming days.

The warmest water in Sullivans Island was recorded on July 19, 2024, reaching a 86.8°F. While the coldest temperature occurred on January 8, 2018, dipping to 47.0°F. The average readings by season are 57.7°F in Winter, 67.0°F in Spring, 82.6°F in Summer, and 73.8°F in Autumn.