What is the current water temperature in Charleston?

Q: What is the current water temperature in Charleston?

As of now, in Charleston, the water temperature is 1.36°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.

United States > Charleston

Water temperature in Charleston

Detailed information about the current water temperature in Charleston. 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.

34.4

°F

February 20, 07:56

Trend:

increasing

Yesterday:

34.2°F

Tomorrow:

34.6°F

Sunrise:

06:44

Sunset:

17:38

Day Length:

10 h. 54 min.

Charleston in February

Minimum:

38.6°F

Average:

42.9°F

Maximum:

47.3°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 34.4°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 4.7°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 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 42.0°F on 2023, while the historical minimum was 35.5°F on 2025.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 34.8°F, with minimum temperature starting at 34.5°F, while the maximum might reach 35.3°F.

Daily water temperature in Charleston

Date	Current Year actual* / forecast**	last year	10 years average
Feb 6	34.0°F	36.9°F	38.1°F
Feb 7	34.0°F	37.0°F	38.2°F
Feb 8	33.0°F	37.7°F	38.2°F
Feb 9	32.0°F	36.8°F	38.4°F
Feb 10	32.6°F	37.0°F	38.5°F
Feb 11	32.8°F	37.0°F	38.6°F
Feb 12	33.0°F	36.7°F	38.6°F
Feb 13	33.8°F	37.0°F	38.7°F
Feb 14	33.5°F	36.8°F	38.5°F
Feb 15	32.9°F	37.3°F	38.6°F
Feb 16	33.4°F	37.4°F	38.6°F
Feb 17	33.8°F	37.4°F	38.7°F
Feb 18	34.3°F	36.9°F	38.6°F
Feb 19	34.2°F	35.3°F	38.5°F
Feb 20	34.4°F	35.5°F	39.1°F
Feb 21	34.6°F	34.5°F	39.2°F
Feb 22	34.5°F	34.2°F	39.2°F
Feb 23	34.7°F	34.0°F	39.3°F
Feb 24	34.7°F	34.8°F	39.3°F
Feb 25	35.3°F	36.3°F	39.9°F
Feb 26	35.2°F	37.5°F	39.8°F
Feb 27	35.0°F	37.8°F	39.6°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 Charleston by month

In Charleston, the months July through August offer comfortable swimming conditions, which amounts to 67 swimming days.

The warmest water in Charleston was recorded on July 20, 2020, reaching a 81.8°F. While the coldest temperature occurred on February 9, 2026, dipping to 32.0°F. The average readings by season are 41.4°F in Winter, 49.8°F in Spring, 73.5°F in Summer, and 63.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Staten Island	33.8°F	5mi
Coney Island	34.2°F	13mi
Jersey City	33.5°F	16mi
Brooklyn	33.5°F	17mi
New York City	33.5°F	17mi

* current water temperature in this city

** straight line distance from Charleston