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 5.64°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.

42.2

°F

March 12, 12:52

Trend:

stable

Yesterday:

43.1°F

Tomorrow:

42.4°F

Sunrise:

07:14

Sunset:

19:00

Day Length:

11 h. 46 min.

Charleston in March

Minimum:

39.0°F

Average:

42.9°F

Maximum:

46.7°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 42.2°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 0.2°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 45.0°F on 2020, while the historical minimum was 39.8°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 42.4°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Charleston

Date	Current Year actual* / forecast**	last year	10 years average
Feb 26	34.4°F	37.5°F	39.3°F
Feb 27	35.0°F	37.8°F	39.2°F
Feb 28	36.1°F	37.7°F	39.8°F
Mar 1	35.4°F	39.1°F	40.0°F
Mar 2	37.1°F	38.0°F	39.7°F
Mar 3	36.3°F	38.9°F	40.3°F
Mar 4	35.8°F	38.2°F	40.3°F
Mar 5	36.1°F	39.5°F	40.2°F
Mar 6	36.2°F	39.5°F	40.2°F
Mar 7	35.5°F	40.7°F	40.2°F
Mar 8	37.2°F	41.3°F	40.5°F
Mar 9	36.6°F	41.6°F	41.0°F
Mar 10	40.2°F	40.9°F	41.6°F
Mar 11	43.1°F	41.9°F	42.0°F
Mar 12	42.2°F	44.0°F	42.4°F
Mar 13	42.4°F	43.5°F	42.6°F
Mar 14	42.0°F	42.7°F	42.3°F
Mar 15	42.0°F	42.4°F	42.2°F
Mar 16	42.1°F	42.7°F	42.3°F
Mar 17	42.8°F	44.7°F	43.0°F
Mar 18	42.7°F	45.4°F	42.9°F
Mar 19	43.1°F	46.3°F	43.3°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	40.5°F	5mi
Coney Island	40.9°F	13mi
Jersey City	39.2°F	16mi
Brooklyn	40.6°F	17mi
New York City	39.2°F	17mi

* current water temperature in this city

** straight line distance from Charleston