Charleston · AutumnMonth summary
Charleston weather in September
✅ Good
🌡️ Temperature min / max
72°F – 82°F
🌧 Rainy days
45% of days
☀️ Sunshine
11.7h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.9/10
📅 📅 Best month
April (8.3/10)
Quick decision
Should you visit Charleston in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 28°F.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.9/10). April scores higher but the gap is small.
By trip type
Charleston in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Charleston is often underrated: 28°F, golden light and declining crowds. An interesting window. Expect rain on 45% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if April (8.3/10) remains theoretically better.
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All months for Charleston
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 43°F | 57°F | 32% | 0.1in | 9.2h | 6.2/10 |
| 🌤️ February | 48°F | 64°F | 29% | 0.1in | 10.0h | 7.2/10 |
| 🌤️ March | 54°F | 68°F | 28% | 0.1in | 10.9h | 7.5/10 |
| 🌤️ April | 61°F | 75°F | 24% | 0.1in | 12.4h | 8.3/10 |
| 🌤️ May | 68°F | 81°F | 38% | 0.1in | 13.0h | 8.3/10 |
| 🌤️ June | 73°F | 84°F | 54% | 0.2in | 12.9h | 7.7/10 |
| 🌤️ July | 77°F | 88°F | 57% | 0.2in | 12.9h | 7.4/10 |
| ⛅ August | 75°F | 86°F | 64% | 0.2in | 12.1h | 7.3/10 |
| 🌤️ September | 72°F | 82°F | 45% | 0.2in | 11.7h | 7.9/10 |
| ☀️ October | 63°F | 77°F | 24% | 0.1in | 10.4h | 8.1/10 |
| 🌤️ November | 52°F | 68°F | 25% | 0.1in | 9.9h | 7.4/10 |
| ⛅ December | 46°F | 63°F | 30% | 0.1in | 9.0h | 7.0/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Charleston averages 82°F, 45% rainy days and 11.7h of sunshine per day. Overall weather score: 7.9/10.
See methodology →
Comparison
September vs April (best month)
The best month is April (score 8.3/10). Difference:
- 🌡️ Max temperature : -4°F
- 🌧 Rainy days : -21%
- ☀️ Sunshine : +0.7h/day
FAQ
FAQ — Charleston in September
Is September a good time to visit Charleston?
September is an excellent time to visit Charleston (score 7.9/10). With 82°F, 11.7h of sunshine and 45% rain, conditions are very favourable.
What to do in Charleston in September?
With 82°F max and 11.7h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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