South Carolina (United States): where to swim in January?
South Carolina, in January: the sea is at 17.7 °C on average along the coast, from 13.9 °C to 21.3 °C depending on the spot. Where the water is warmest (21.3 °C), it is pleasant. You can swim for a long time without shivering.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 17.7 °C | 13.9 °C – 21.3 °C | pleasant |
| February | 16.5 °C | 12.1 °C – 20.3 °C | pleasant |
| March | 17.7 °C | 14.0 °C – 20.9 °C | pleasant |
| April | 20.3 °C | 18.3 °C – 22.3 °C | pleasant |
| May | 23.1 °C | 22.1 °C – 24.2 °C | warm |
| June | 26.5 °C | 26.1 °C – 27.0 °C | very warm |
| July | 28.5 °C | 28.2 °C – 28.9 °C | very warm |
| August | 28.7 °C | 28.4 °C – 29.2 °C | very warm |
| September | 27.7 °C | 27.3 °C – 28.3 °C | very warm |
| October | 25.3 °C | 23.8 °C – 26.7 °C | warm |
| November | 21.8 °C | 18.8 °C – 24.7 °C | warm |
| December | 19.5 °C | 14.7 °C – 23.3 °C | warm |
Compared with December, the water cools down by 1.8 °C in January. The warmest month: August (28.7 °C). The coldest: February (16.5 °C).
Nearby, in January
- North Carolina 16.7 °C · warm
- Georgia 15.8 °C · pleasant
- Virginia 8.5 °C · cold
- Alabama 17.6 °C · pleasant
- Florida 21.1 °C · warm
And right now?
For the temperature measured right now, station by station and to the hour: South Carolina: water temperature
Frequently asked questions
What is the sea temperature in January?
South Carolina, in January: 17.7 °C on average along the coast, from 13.9 °C in the coolest waters to 21.3 °C in the warmest (average of the years 2011 to 2025).
Can you swim in January?
Where the water is warmest (21.3 °C), it is pleasant. You can swim for a long time without shivering.
What is the best month for swimming?
The water is warmest in August (28.7 °C on average) and coldest in February (16.5 °C). Where the water is warmest, it goes above 20 °C in these months: January, February, March, April, May, June, July, August, September, October, November, December.
What temperature do you need to swim comfortably?
Below 15 °C the water is cold: the cold takes your breath away and tires you quickly. Between 20 °C and 25 °C most people find it pleasant. Below 10 °C it is very cold.
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.