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 11.2°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.

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.

52.2

°F

January 24, 01:38

Trend:

decreasing

Yesterday:

52.5°F

Tomorrow:

51.8°F

Sunrise:

07:19

Sunset:

17:45

Day Length:

10 h. 26 min.

Charleston in January

Minimum:

49.9°F

Average:

56.9°F

Maximum:

67.6°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 52.2°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 2.6°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 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 60.2°F on 2016, while the historical minimum was 50.3°F on 2025.

latest data

last year

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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 51.3°F, the minimum temperature may reach 51.0°F, and the maximum might stay at 51.8°F.

Daily water temperature in Charleston

Date	Current Year actual* / forecast**	last year	10 years average
Jan 10	54.8°F	51.9°F	55.9°F
Jan 11	55.9°F	51.9°F	55.8°F
Jan 12	58.1°F	51.0°F	56.0°F
Jan 13	57.1°F	48.5°F	55.9°F
Jan 14	54.8°F	49.6°F	55.9°F
Jan 15	55.5°F	47.0°F	55.3°F
Jan 16	54.9°F	48.3°F	55.3°F
Jan 17	53.7°F	49.6°F	55.2°F
Jan 18	52.9°F	47.4°F	54.7°F
Jan 19	52.7°F	48.4°F	54.4°F
Jan 20	52.0°F	49.7°F	54.6°F
Jan 21	51.7°F	49.1°F	54.7°F
Jan 22	51.0°F	50.2°F	54.8°F
Jan 23	52.5°F	50.1°F	55.1°F
Jan 24	52.2°F	50.3°F	54.7°F
Jan 25	51.8°F	47.8°F	54.4°F
Jan 26	51.4°F	44.2°F	53.9°F
Jan 27	51.5°F	44.8°F	54.0°F
Jan 28	51.3°F	46.0°F	53.9°F
Jan 29	51.1°F	46.3°F	53.7°F
Jan 30	51.2°F	46.1°F	53.7°F
Jan 31	51.0°F	48.2°F	53.6°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 May through October offer comfortable swimming conditions, which amounts to 157 swimming days.

The warmest water in Charleston was recorded on July 19, 2024, reaching a 87.3°F. While the coldest temperature occurred on January 26, 2025, dipping to 44.2°F. The average readings by season are 56.2°F in Winter, 67.2°F in Spring, 82.8°F in Summer, and 73.4°F in Autumn.