Swimming in Charleston in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Charleston in september 2025.
In september, according to seasonal norms, the sea temperature in Charleston is:
Minimum: 80°F
Average: 82°F
Maximum: 84°F
Other useful seasonal weather averages in september:
- Outside temperature: 73°F to 85°F
- Most common weather: "Clear/Sunny"
- The wind blows at 14.3mph
- It rains a total of 5.7in, over 8 day(s).
Should we swim in Charleston in september?
Yes! The water temperature in Charleston in september is ideal
In september, swimming is ideal on the beaches around Charleston! With water reaching 84°F at most and 82°F on average, spending time in the water is very pleasant.
Note also that in september, the climate is good with an average outside temperature of 79°F, 5.7in of precipitation (over 8 days) and 83.57 % humidity.
Water and normal seasonal temperatures in Charleston in september
| September | |||
| Average sea temperature | 82°F | ||
| Minimum sea temperature | 80°F | ||
| Maximum sea temperature | 84°F | ||
| Average outside temperature | 81°F | ||
| Maximum outside temperature | 86°F | ||
| Minimum outside temperature | 74°F | ||
| Wind speed | 9.3mph | ||
| Wind temperature | 74°F | ||
| Precipitation | 5.7in | ||
| Number of days of rain | 8 jour(s) (26%) | ||
| Humidity | 84% | ||
| Visibility in kilometers | 9.54km | ||
| Cloud cover | 31% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Charleston
Swim elsewhere in the United States (USA) in september
Swim in the United States (USA) in september: sea temperature by city