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 1.34°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

January 30, 04:35

Trend:

stable

Yesterday:

34.9°F

Tomorrow:

34.6°F

Sunrise:

07:09

Sunset:

17:12

Day Length:

10 h. 3 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 4.2°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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 41.4°F on 2017, while the historical minimum was 35.3°F on 2025.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 34.4°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
Jan 16	38.5°F	36.4°F	40.6°F
Jan 17	38.4°F	36.8°F	40.5°F
Jan 18	38.5°F	36.3°F	40.2°F
Jan 19	38.7°F	36.1°F	40.0°F
Jan 20	37.2°F	34.8°F	39.3°F
Jan 21	36.9°F	34.4°F	39.2°F
Jan 22	36.8°F	34.8°F	39.0°F
Jan 23	37.6°F	33.9°F	39.1°F
Jan 24	36.2°F	34.7°F	39.1°F
Jan 25	36.4°F	35.2°F	39.1°F
Jan 26	36.9°F	36.5°F	39.0°F
Jan 27	36.6°F	34.6°F	38.8°F
Jan 28	33.5°F	35.6°F	38.4°F
Jan 29	34.9°F	36.0°F	38.4°F
Jan 30	34.4°F	35.3°F	38.6°F
Jan 31	34.6°F	36.4°F	38.8°F
Feb 1	34.4°F	36.5°F	38.6°F
Feb 2	34.3°F	35.7°F	38.5°F
Feb 3	34.5°F	35.7°F	38.7°F
Feb 4	34.5°F	35.3°F	38.7°F
Feb 5	34.4°F	37.4°F	38.6°F
Feb 6	34.4°F	36.9°F	38.6°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 January 28, 2026, dipping to 33.5°F. The average readings by season are 41.5°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	34.2°F	5mi
Coney Island	36.1°F	13mi
Jersey City	34.5°F	16mi
Brooklyn	35.4°F	17mi
New York City	34.5°F	17mi

* current water temperature in this city

** straight line distance from Charleston