Charleston · AutumnMonth summary
Charleston weather in September
✅ Good
🌡️ Temperature min / max
22°C – 28°C
🌧 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°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: September is a good time to visit Charleston. April remains slightly better (+0.4 pts).
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
🎯 Harvest season — fresh local produce at markets and restaurants Autumn in Charleston is often underrated: 28°C, 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.
Browse by month
All months for Charleston
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 6°C | 14°C | 32% | 2.6 | 9.2h | 6.2/10 |
| 🌤️ February | 9°C | 18°C | 29% | 2.7 | 10.0h | 7.2/10 |
| 🌤️ March | 12°C | 20°C | 28% | 2.4 | 10.9h | 7.5/10 |
| 🌤️ April | 16°C | 24°C | 24% | 3.3 | 12.4h | 8.3/10 |
| 🌤️ May | 20°C | 27°C | 38% | 3.2 | 13.0h | 8.3/10 |
| 🌤️ June | 23°C | 29°C | 54% | 4.2 | 12.9h | 7.7/10 |
| 🌤️ July | 25°C | 31°C | 57% | 4.1 | 12.9h | 7.4/10 |
| ⛅ August | 24°C | 30°C | 64% | 5.9 | 12.1h | 7.3/10 |
| 🌤️ September | 22°C | 28°C | 45% | 4.8 | 11.7h | 7.9/10 |
| ☀️ October | 17°C | 25°C | 24% | 2.8 | 10.4h | 8.1/10 |
| 🌤️ November | 11°C | 20°C | 25% | 2.5 | 9.9h | 7.4/10 |
| ⛅ December | 8°C | 17°C | 30% | 3.7 | 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 28°C, 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°C
- 🌧 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 28°C, 11.7h of sunshine and 45% rain, conditions are very favourable.
What to do in Charleston in September?
With 28°C 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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