All data are in degrees Fahrenheit

en
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.
Sea temperature in Charleston now

51.6

°F

April 14, 01:28

Trend:

increasing

Yesterday:

50.8°F

Tomorrow:

52.2°F

Sunrise:

06:20

Sunset:

19:35

Day Length:

13 h. 15 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 51.6°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 2.7°F higher 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 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 54.2°F on 2023, while the historical minimum was 44.7°F on 2018.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 53.1°F, with minimum temperature starting at 52.2°F, while the maximum might reach 53.5°F.

Daily water temperature in Charleston

Date Current Year

actual* / forecast**

 last year 10 years average
Mar 31 45.2°F 45.3°F 45.0°F
Apr 1 45.1°F 45.7°F 45.1°F
Apr 2 48.8°F 48.5°F 45.9°F
Apr 3 46.8°F 48.5°F 46.0°F
Apr 4 45.2°F 48.1°F 46.0°F
Apr 5 47.1°F 48.0°F 46.5°F
Apr 6 45.6°F 48.0°F 46.0°F
Apr 7 46.7°F 47.7°F 46.5°F
Apr 8 48.4°F 47.5°F 47.0°F
Apr 9 48.2°F 48.3°F 47.5°F
Apr 10 48.1°F 47.8°F 47.3°F
Apr 11 50.5°F 48.3°F 48.1°F
Apr 12 51.1°F 47.9°F 47.7°F
Apr 13 50.8°F 47.6°F 48.1°F
Apr 14 51.6°F 46.9°F 48.9°F
Apr 15 52.2°F 47.0°F 49.5°F
Apr 16 53.2°F 47.6°F 50.5°F
Apr 17 53.2°F 48.0°F 50.6°F
Apr 18 53.2°F 48.8°F 50.5°F
Apr 19 53.2°F 48.2°F 50.5°F
Apr 20 53.0°F 47.9°F 50.4°F
Apr 21 53.5°F 48.7°F 50.8°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

January

February

March

April

May

June

July

August

September

October

November

December

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 48.3°F 5mi
Coney Island 47.1°F 13mi
Jersey City 48.3°F 16mi
Brooklyn 47.4°F 17mi
New York City 48.3°F 17mi

* current water temperature in this city

** straight line distance from Charleston