Current sea water temperature:
+55.9°F
| Minimum sea water temperature in January: | 67.6°F |
| Maximum sea water temperature in January: | 44.4°F |
| Average sea water temperature in January: | 58.0°F |
| more information | |
14 days
forecast
forecast
| Charleston |
monthly
weather
weather
| Charleston |
Sea water temperature for the last 10 days:
| January 11 | 55.9°F | January 6 | 56.8°F |
| January 10 | 54.9°F | January 5 | 55.8°F |
| January 9 | 55.0°F | January 4 | 54.9°F |
| January 8 | 55.4°F | January 3 | 54.7°F |
| January 7 | 56.3°F | January 2 | 55.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Charleston?
Based on the data about daily sea water temperature for the last three years the warmest sea in Charleston was noticed in August, July and September.
Monthly Sea Temperatures in Charleston, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 84.1°F. The highest and lowest sea temperatures during the month were 86.9°F and 82.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 86.9°F and 82.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 78.8°F. The highest and lowest sea temperatures during the month were 81.5°F and 75.4°F.
current
weather
weather
| Charleston |
weather in
January
January
| Charleston |
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 00:44
January 12, monday
0300
41°F
S
13 mph
13 mph
0600
39°F
S
11 mph
11 mph
0900
36°F
SW
8 mph
8 mph
1200
41°F
SW
6 mph
6 mph
1500
46°F
W
4 mph
4 mph
1800
48°F
W
3 mph
3 mph
2100
45°F
SW
3 mph
3 mph
January 13, tuesday
0000
43°F
S
2 mph
2 mph
