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Charleston in March

Find out everything about the water temperature in Charleston in March. Average, minimum and maximum recorded temperatures as well as daily temperature in March for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in March
Minimum:

53.7 °F

Average:

60.6 °F

Maximum:

69.4 °F

Sea water temperature in Charleston in March

In the city of Charleston, the month of March is too cold for swimming. The minimum recorded temperature during this month was 53.7°F on March 5, 2025, with an average temperature being 60.6°F and a maximum temperature reaching 69.4°F on March 31, 2020.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. In March, the sea temperature remains relatively stable. The average temperature stays close to 60.6°F throughout the month, with minimal changes.
Date 10 years average 2025 2024
Mar 1 58.8°F 55.1°F 58.0°F
Mar 2 59.2°F 55.2°F 58.0°F
Mar 3 59.5°F 55.8°F 58.1°F
Mar 4 59.4°F 54.6°F 59.5°F
Mar 5 59.4°F 53.7°F 58.2°F
Mar 6 59.4°F 54.1°F 58.0°F
Mar 7 59.7°F 55.9°F 59.8°F
Mar 8 59.7°F 56.5°F 59.8°F
Mar 9 59.6°F 56.1°F 59.6°F
Mar 10 59.8°F 56.4°F 59.7°F
Mar 11 60.5°F 56.8°F 61.7°F
Mar 12 60.4°F 57.1°F 60.9°F
Mar 13 60.5°F 56.7°F 60.4°F
Mar 14 60.6°F 57.3°F 61.4°F
Mar 15 60.7°F 57.6°F 60.7°F
Mar 16 60.3°F 58.0°F 61.0°F
Mar 17 60.2°F 57.0°F 61.3°F
Mar 18 60.6°F 60.1°F 62.9°F
Mar 19 61.0°F 60.4°F 64.0°F
Mar 20 60.9°F 60.2°F 62.1°F
Mar 21 61.5°F 61.0°F 62.2°F
Mar 22 61.1°F 60.7°F 60.3°F
Mar 23 60.8°F 60.7°F 60.4°F
Mar 24 60.8°F 60.0°F 61.5°F
Mar 25 61.4°F 61.5°F 62.3°F
Mar 26 61.7°F 62.1°F 61.7°F
Mar 27 61.9°F 61.4°F 61.1°F
Mar 28 61.9°F 61.3°F 61.6°F
Mar 29 62.0°F 62.2°F 61.7°F
Mar 30 62.1°F 62.0°F 61.1°F
Mar 31 62.8°F 62.2°F 62.7°F

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. The average temperature in March is slightly warmer than February's average of 56.3°F. And in April, the temperature is expected to rise further, potentially reaching an average of 66.5°F.