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 17.88°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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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.

64.2

°F

November 24, 12:04

Trend:

stable

Yesterday:

63.1°F

Tomorrow:

64.0°F

Sunrise:

06:57

Sunset:

17:14

Day Length:

10 h. 17 min.

Sullivans Island in November

Minimum:

50.5°F

Average:

56.5°F

Maximum:

63.5°F

Sea water temperature in Sullivans Island today

As of now, in Sullivans Island, the water temperature is 64.2°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.4°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 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 66.3°F on 2020, while the historical minimum was 57.8°F on 2019.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 63.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Sullivans Island

Date	Current Year actual* / forecast**	last year	10 years average
Nov 10	66.3°F	70.8°F	67.6°F
Nov 11	64.5°F	70.3°F	67.0°F
Nov 12	63.7°F	70.1°F	66.8°F
Nov 13	60.6°F	69.7°F	66.4°F
Nov 14	59.3°F	69.1°F	65.9°F
Nov 15	60.0°F	69.7°F	65.8°F
Nov 16	60.5°F	67.8°F	65.5°F
Nov 17	61.1°F	66.6°F	65.3°F
Nov 18	61.2°F	65.7°F	64.9°F
Nov 19	61.5°F	66.7°F	64.6°F
Nov 20	61.2°F	67.8°F	64.3°F
Nov 21	61.6°F	68.1°F	63.9°F
Nov 22	61.6°F	67.7°F	63.4°F
Nov 23	63.1°F	65.5°F	62.8°F
Nov 24	64.2°F	63.0°F	61.8°F
Nov 25	64.0°F	62.4°F	61.6°F
Nov 26	63.8°F	62.2°F	61.4°F
Nov 27	63.8°F	63.6°F	61.4°F
Nov 28	64.1°F	63.0°F	61.7°F
Nov 29	64.2°F	64.8°F	61.8°F
Nov 30	63.8°F	64.3°F	61.4°F
Dec 1	63.4°F	63.3°F	61.0°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 August 1, 2025, reaching a 86.8°F. While the coldest temperature occurred on January 26, 2025, dipping to 44.1°F. The average readings by season are 56.9°F in Winter, 67.1°F in Spring, 82.7°F in Summer, and 73.5°F in Autumn.