All data are in degrees Fahrenheit

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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.
Sea temperature in Charleston now

71.9

°F

September 1, 10:01

Trend:

decreasing

Yesterday:

72.5°F

Tomorrow:

70.9°F

Sunrise:

06:24

Sunset:

19:29

Day Length:

13 h. 5 min.

Charleston in September

Minimum:

39.6°F

Average:

41.8°F

Maximum:

43.1°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 71.9°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 3.5°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 fall considerably.

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 79.3°F on 2022, while the historical minimum was 70.8°F on 2017.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 70.8°F, the minimum temperature may reach 70.5°F, and the maximum might stay at 70.9°F.

Daily water temperature in Charleston

Date Current Year

actual* / forecast**

last year 10 years average
Aug 18 79.0°F 76.3°F 77.0°F
Aug 19 79.4°F 76.9°F 77.0°F
Aug 20 77.1°F 76.7°F 76.8°F
Aug 21 76.3°F 76.5°F 76.6°F
Aug 22 74.9°F 74.3°F 76.0°F
Aug 23 72.2°F 73.3°F 75.6°F
Aug 24 73.8°F 73.0°F 75.4°F
Aug 25 73.5°F 72.6°F 75.5°F
Aug 26 73.7°F 73.1°F 75.4°F
Aug 27 73.7°F 72.8°F 75.6°F
Aug 28 73.1°F 74.6°F 75.7°F
Aug 29 72.2°F 74.6°F 75.4°F
Aug 30 73.0°F 74.4°F 75.3°F
Aug 31 72.5°F 74.1°F 75.3°F
Sep 1 71.9°F 73.8°F 75.4°F
Sep 2 70.9°F 73.4°F 74.4°F
Sep 3 70.5°F 73.3°F 74.0°F
Sep 4 70.5°F 72.6°F 74.0°F
Sep 5 70.9°F 72.1°F 74.4°F
Sep 6 70.9°F 72.8°F 74.4°F
Sep 7 70.8°F 71.9°F 74.3°F
Sep 8 70.8°F 72.6°F 74.3°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 69 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 19, 2022, dipping to 33.6°F. The average readings by season are 41.8°F in Winter, 49.5°F in Spring, 73.3°F in Summer, and 63.4°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Staten Island 71.5°F 5mi
Coney Island 70.8°F 13mi
Jersey City 71.6°F 16mi
Brooklyn 71.1°F 17mi
New York City 71.6°F 17mi

* current water temperature in this city

** straight line distance from Charleston