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 13.49°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.

56.3

°F

December 30, 13:49

Trend:

stable

Yesterday:

56.2°F

Tomorrow:

56.3°F

Sunrise:

07:22

Sunset:

17:23

Day Length:

10 h. 1 min.

Charleston in January

Minimum:

49.9°F

Average:

57.6°F

Maximum:

67.6°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 56.3°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 stay about the same.

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 falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 67.5°F on 2015, while the historical minimum was 48.2°F on 2022.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 57.4°F, with minimum temperature starting at 56.3°F, while the maximum might reach 57.9°F.

Daily water temperature in Charleston

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	57.5°F	53.7°F	57.6°F
Jan 2	57.8°F	54.4°F	57.8°F
Jan 3	57.5°F	52.3°F	57.6°F
Jan 4	57.9°F	53.9°F	57.9°F
Jan 5	57.7°F	53.3°F	57.8°F
Jan 6	57.1°F	51.4°F	57.1°F
Dec 16	54.4°F	55.1°F	58.0°F
Dec 17	52.6°F	55.3°F	57.8°F
Dec 18	50.6°F	56.3°F	57.9°F
Dec 19	52.1°F	58.6°F	58.0°F
Dec 20	51.5°F	58.1°F	57.7°F
Dec 21	53.0°F	58.2°F	57.3°F
Dec 22	52.0°F	56.5°F	57.2°F
Dec 23	53.9°F	55.7°F	56.9°F
Dec 24	53.0°F	53.8°F	56.5°F
Dec 25	54.8°F	52.9°F	56.4°F
Dec 26	55.2°F	52.7°F	56.0°F
Dec 27	55.4°F	52.0°F	55.7°F
Dec 28	56.7°F	52.3°F	55.9°F
Dec 29	56.2°F	53.3°F	56.0°F
Dec 30	56.3°F	53.4°F	56.4°F
Dec 31	56.3°F	54.2°F	56.3°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 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 56.9°F in Winter, 67.2°F in Spring, 82.8°F in Summer, and 73.5°F in Autumn.