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 7.29°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.

45.1

°F

April 1, 14:30

Trend:

stable

Yesterday:

45.2°F

Tomorrow:

45.7°F

Sunrise:

06:41

Sunset:

19:21

Day Length:

12 h. 40 min.

Charleston in April

Minimum:

39.0°F

Average:

42.5°F

Maximum:

45.8°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 45.1°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 about the same as 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 47.7°F on 2021, while the historical minimum was 42.3°F on 2017.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 46.2°F, with minimum temperature starting at 45.7°F, while the maximum might reach 46.9°F.

Daily water temperature in Charleston

Date	Current Year actual* / forecast**	last year	10 years average
Mar 18	42.1°F	45.4°F	42.8°F
Mar 19	41.3°F	46.3°F	43.1°F
Mar 20	41.1°F	45.3°F	43.0°F
Mar 21	40.5°F	45.8°F	43.0°F
Mar 22	42.4°F	46.5°F	44.0°F
Mar 23	42.8°F	46.6°F	43.9°F
Mar 24	41.7°F	46.5°F	43.7°F
Mar 25	42.1°F	43.2°F	43.6°F
Mar 26	42.5°F	46.7°F	43.9°F
Mar 27	42.8°F	44.9°F	44.1°F
Mar 28	43.9°F	45.8°F	44.3°F
Mar 29	44.3°F	45.5°F	44.5°F
Mar 30	43.9°F	45.5°F	44.6°F
Mar 31	45.2°F	45.3°F	45.0°F
Apr 1	45.1°F	45.7°F	45.1°F
Apr 2	45.7°F	48.5°F	45.7°F
Apr 3	46.0°F	48.5°F	46.0°F
Apr 4	46.1°F	48.1°F	46.1°F
Apr 5	46.4°F	48.0°F	46.4°F
Apr 6	46.1°F	48.0°F	46.1°F
Apr 7	46.5°F	47.7°F	46.5°F
Apr 8	46.9°F	47.5°F	46.9°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, 49.7°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	43.3°F	5mi
Coney Island	42.4°F	13mi
Jersey City	43.1°F	16mi
Brooklyn	42.6°F	17mi
New York City	43.1°F	17mi

* current water temperature in this city

** straight line distance from Charleston