Typical September weather
Charleston
South Carolina · September
83° days
73° nights
about 6 rainy days · 12½ hours of daylight · ocean 81°
What to pack
- Umbrella
- Swimsuit
- Sunscreen
What September feels like
September is the height of hurricane season here and Charlestonians have long memories about it, but it is also when rates fall and restaurant lines vanish. King tides around the new and full moons can put water in the streets on a perfectly sunny day.
Expect about 6 days with real rain — enough to notice, not enough to plan around.
Can you swim?
The ocean runs about 81° — bath-warm.
The numbers
| Typical high | 83° |
|---|---|
| Typical low | 73° |
| Days with real rain | 6 |
| Total rain | 5.3 in |
| Water temperature | 81° |
| Sunrise / sunset (mid-month) | 7:03 am / 7:26 pm |