Current sea water temperature:
+85.5°F
| Minimum sea water temperature in July: | 87.3°F |
| Maximum sea water temperature in July: | 80.2°F |
| Average sea water temperature in July: | 83.7°F |
| more information | |
14 days
forecast
forecast
| Charleston |
monthly
weather
weather
| Charleston |
Sea water temperature for the last 10 days:
| July 16 | 85.5°F | July 11 | 86.4°F |
| July 15 | 84.9°F | July 10 | 86.5°F |
| July 14 | 85.1°F | July 9 | 86.4°F |
| July 13 | 85.6°F | July 8 | 86.4°F |
| July 12 | 86.5°F | July 7 | 85.8°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 85.4°F. The highest and lowest sea temperatures during the month were 86.5°F and 84.4°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
July
July
| Charleston |
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 08:00
July 16, thursday
0900
81°F
SE
1 mph
1 mph
1200
91°F
NW
4 mph
4 mph
1500
93°F
NW
9 mph
9 mph
1800
88°F
N
9 mph
9 mph
2100
82°F
N
7 mph
7 mph
July 17, friday
0000
82°F
NE
7 mph
7 mph
0300
81°F
NE
5 mph
5 mph
0600
79°F
E
4 mph
4 mph
