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

79.8

°F

June 9, 02:44

Trend:

increasing

Yesterday:

79.6°F

Tomorrow:

80.1°F

Sunrise:

06:11

Sunset:

20:27

Day Length:

14 h. 16 min.

Charleston in June

Minimum:

48.9°F

Average:

57.1°F

Maximum:

65.1°F

Sea water temperature in Charleston today

As of now, in Charleston, the water temperature is 79.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.5°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 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 81.3°F on 2018, while the historical minimum was 74.2°F on 2023.

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 80.7°F, with minimum temperature starting at 80.1°F, while the maximum might reach 81.2°F.

Daily water temperature in Charleston

Date Current Year

actual* / forecast**

last year 10 years average
May 26 76.6°F 76.9°F 76.7°F
May 27 76.4°F 76.9°F 76.9°F
May 28 76.5°F 78.4°F 77.5°F
May 29 77.0°F 79.4°F 77.6°F
May 30 76.3°F 78.7°F 77.4°F
May 31 76.7°F 78.9°F 77.6°F
Jun 1 77.9°F 78.0°F 77.6°F
Jun 2 76.2°F 77.8°F 77.9°F
Jun 3 76.5°F 78.8°F 78.0°F
Jun 4 77.4°F 78.0°F 78.2°F
Jun 5 77.5°F 78.7°F 78.4°F
Jun 6 79.3°F 79.5°F 78.7°F
Jun 7 79.1°F 80.3°F 78.9°F
Jun 8 79.6°F 81.1°F 79.1°F
Jun 9 79.8°F 81.1°F 79.3°F
Jun 10 80.1°F 81.2°F 79.6°F
Jun 11 80.1°F 81.3°F 79.6°F
Jun 12 80.9°F 81.2°F 80.3°F
Jun 13 80.9°F 81.6°F 80.4°F
Jun 14 81.1°F 81.1°F 80.6°F
Jun 15 80.9°F 80.4°F 80.4°F
Jun 16 81.2°F 80.9°F 80.7°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 57.0°F in Winter, 67.2°F in Spring, 82.7°F in Summer, and 73.7°F in Autumn.