Water temperature in Charleston (SC) in March
Is it warm enough to swim in Charleston in March? Average water temperature in Charleston in March is 61.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Charleston in March is 66.7°F, and the coldest is 53.6°F. Average high air temperature in Charleston in March is 70°F, and average low temperature is 47°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Charleston
Changes water temperature in Charleston in March 2026, 2025
To get an accurate forecast for the water temperature in Charleston for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Charleston, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of March.
You can choose any other years:
| Day | 2026 | 2025 | Min | Max |
|---|---|---|---|---|
| March 1 | 53.1°F | 55.4°F | 53.1°F | 65.1°F |
| March 2 | 54.1°F | 54.9°F | 54.1°F | 64°F |
| March 3 | 55.2°F | 54.3°F | 64.4°F | |
| March 4 | 54.9°F | 53.6°F | 65.1°F | |
| March 5 | 55.8°F | 54.9°F | 64.6°F | |
| March 6 | 55.6°F | 54.9°F | 64.8°F | |
| March 7 | 55.6°F | 54.7°F | 65.3°F | |
| March 8 | 56.7°F | 54.5°F | 64.6°F | |
| March 9 | 56.3°F | 54°F | 64.6°F | |
| March 10 | 56.7°F | 55.6°F | 64.4°F | |
| March 11 | 56.7°F | 56.7°F | 64.2°F | |
| March 12 | 57.7°F | 57.7°F | 64.9°F | |
| March 13 | 57.6°F | 57.6°F | 65.5°F | |
| March 14 | 58.5°F | 57.7°F | 66°F | |
| March 15 | 58.6°F | 57.6°F | 65.7°F |
| Day | 2026 | 2025 | Min | Max |
|---|---|---|---|---|
| March 16 | 57°F | 57°F | 65.3°F | |
| March 17 | 58.5°F | 57.6°F | 64.8°F | |
| March 18 | 59.7°F | 57.6°F | 65.1°F | |
| March 19 | 60.1°F | 58.3°F | 65.5°F | |
| March 20 | 60.1°F | 58.6°F | 66°F | |
| March 21 | 59.5°F | 58.8°F | 66°F | |
| March 22 | 59.4°F | 56.8°F | 66.2°F | |
| March 23 | 59.7°F | 56.5°F | 66.4°F | |
| March 24 | 60.1°F | 58.5°F | 66°F | |
| March 25 | 61.3°F | 58.1°F | 65.7°F | |
| March 26 | 60.4°F | 57.4°F | 65.3°F | |
| March 27 | 60.8°F | 55.8°F | 66°F | |
| March 28 | 61.2°F | 55.2°F | 66.4°F | |
| March 29 | 61°F | 54.7°F | 66.7°F | |
| March 30 | 61.2°F | 55.8°F | 66.2°F | |
| March 31 | 63.7°F | 56.3°F | 66.6°F |
Want to know the water temperature and sea conditions in a location you're interested in without having to search for it every time? Install our app for Android or iOS and stay up-to-date.
Average water temperature in Charleston in March over a decade
| 2016 | 2017 | 2018 | 2019 | 2020 |
| 62.4°F | 60.8°F | 58.6°F | 59.7°F | 60.8°F |
| 2021 | 2022 | 2023 | 2024 | 2025 |
| 58.3°F | 61.7°F | 63°F | 60.3°F | 58.3°F |
Charleston sea state in March
Chart comparing the height of waves in Charleston in March over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.
Weather and climate in Charleston in March
This data display average monthly climate indicators in Charleston in March based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip
- Average HIGH temperature70°F
- Average LOW temperature47°F
- Average humidity
68 - Average rainfall days8 days
- Average rainfall94mm/3.7''
- Average daylight12h
- Average sunshine7.9h
- Average UV index7
Charleston water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
