Water temperature in Charleston (SC) in January
Is it warm enough to swim in Charleston in January? Average water temperature in Charleston in January is 59.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Charleston in January is 69.1°F, and the coldest is 44.8°F. Average high air temperature in Charleston in January is 59°F, and average low temperature is 38°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 January 2025, 2024
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 January.
You can choose any other years:
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| January 1 | 57.6°F | 55.6°F | 52.3°F | 68.4°F |
| January 2 | 57.2°F | 55.6°F | 52.5°F | 68.7°F |
| January 3 | 57.4°F | 55°F | 51.4°F | 68.2°F |
| January 4 | 55.8°F | 55°F | 49.8°F | 68.5°F |
| January 5 | 54.7°F | 55.4°F | 49.6°F | 68.9°F |
| January 6 | 54.3°F | 55.8°F | 49.1°F | 68.7°F |
| January 7 | 54°F | 55.4°F | 48.4°F | 68.5°F |
| January 8 | 53.6°F | 53.8°F | 49.6°F | 68.4°F |
| January 9 | 52.3°F | 55.4°F | 50.9°F | 68°F |
| January 10 | 52.7°F | 54.9°F | 52°F | 67.8°F |
| January 11 | 50.9°F | 54.9°F | 50.9°F | 67.5°F |
| January 12 | 51.3°F | 54.1°F | 51.3°F | 67.5°F |
| January 13 | 51.8°F | 54.7°F | 51.8°F | 67.5°F |
| January 14 | 50.4°F | 55.8°F | 50.4°F | 67.6°F |
| January 15 | 51.1°F | 55.8°F | 51.1°F | 68.7°F |
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| January 16 | 50.2°F | 53.6°F | 50.2°F | 69.1°F |
| January 17 | 51.3°F | 53.2°F | 51.3°F | 68.4°F |
| January 18 | 51.4°F | 54.3°F | 51.4°F | 68°F |
| January 19 | 51.8°F | 53.6°F | 51.8°F | 67.6°F |
| January 20 | 51.3°F | 52.7°F | 51.3°F | 68.2°F |
| January 21 | 50.5°F | 52.2°F | 50.5°F | 68.5°F |
| January 22 | 48.9°F | 51.1°F | 48.9°F | 68.5°F |
| January 23 | 48°F | 52°F | 48°F | 68.4°F |
| January 24 | 46.8°F | 53.2°F | 46.8°F | 68.9°F |
| January 25 | 45.3°F | 54.1°F | 45.3°F | 69.1°F |
| January 26 | 44.8°F | 53.8°F | 44.8°F | 69.1°F |
| January 27 | 44.8°F | 53.4°F | 44.8°F | 68.9°F |
| January 28 | 47.1°F | 54.9°F | 47.1°F | 67.6°F |
| January 29 | 48.4°F | 54.9°F | 48.4°F | 67.3°F |
| January 30 | 48°F | 54.9°F | 48°F | 66.9°F |
| January 31 | 48.2°F | 54°F | 48.2°F | 67.1°F |
Average water temperature in Charleston in January over a decade
| 2016 | 2017 | 2018 | 2019 | 2020 |
| 62.2°F | 57.7°F | 53.4°F | 56.8°F | 57.4°F |
| 2021 | 2022 | 2023 | 2024 | 2025 |
| 55.6°F | 55.2°F | 55.6°F | 54.3°F | 51.1°F |
Charleston sea state in January
Chart comparing the height of waves in Charleston in January 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 January
This data display average monthly climate indicators in Charleston in January 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 temperature59°F
- Average LOW temperature38°F
- Average humidity
70 - Average rainfall days10 days
- Average rainfall94mm/3.7''
- Average daylight10h
- Average sunshine5.8h
- Average UV index3
Charleston water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
