All data are in degrees Fahrenheit

en

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

65.2

°F

April 3, 06:40

Trend:

increasing

Yesterday:

65.1°F

Tomorrow:

65.3°F

Sunrise:

07:06

Sunset:

19:41

Day Length:

12 h. 35 min.

Charleston in April

Minimum:

50.4°F

Average:

57.9°F

Maximum:

66.5°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 65.2°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.9°F higher 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 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 66.1°F on 2020, while the historical minimum was 59.3°F on 2018.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 66.3°F, with minimum temperature starting at 65.3°F, while the maximum might reach 67.3°F.

Daily water temperature in Charleston

Date Current Year

actual* / forecast**

last year 10 years average
Mar 20 60.2°F 62.1°F 60.9°F
Mar 21 61.0°F 62.2°F 61.5°F
Mar 22 60.7°F 60.3°F 61.1°F
Mar 23 60.7°F 60.4°F 60.8°F
Mar 24 60.0°F 61.5°F 60.8°F
Mar 25 61.5°F 62.3°F 61.4°F
Mar 26 62.1°F 61.7°F 61.7°F
Mar 27 61.4°F 61.1°F 61.9°F
Mar 28 61.3°F 61.6°F 61.9°F
Mar 29 62.2°F 61.7°F 62.0°F
Mar 30 62.0°F 61.1°F 62.1°F
Mar 31 62.2°F 62.7°F 62.8°F
Apr 1 65.2°F 62.9°F 63.2°F
Apr 2 65.1°F 62.3°F 63.4°F
Apr 3 65.2°F 62.8°F 63.4°F
Apr 4 65.3°F 64.4°F 63.4°F
Apr 5 65.6°F 64.5°F 63.7°F
Apr 6 65.8°F 64.1°F 63.9°F
Apr 7 66.2°F 64.1°F 64.3°F
Apr 8 67.0°F 63.1°F 65.2°F
Apr 9 67.3°F 62.5°F 65.4°F
Apr 10 67.1°F 63.6°F 65.2°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 156 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 57.0°F in Winter, 67.1°F in Spring, 82.7°F in Summer, and 73.7°F in Autumn.