Charleston weather in October
October in Charleston: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Charleston · #93 of 604 destinations to visit in October · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Charleston climate normals — October
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 73 mm / 2.9 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 11.4 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Charleston?
Loading map…
Charleston in October — FAQ
- Is October a good time to visit Charleston?
- October in Charleston: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Charleston on SeasonMap's comfort score (87/100).
- What is the weather like in Charleston in October?
- In October, Charleston averages a daily high of 24.4°C and a low of 18.2°C, with about 72.9 mm of rain over roughly 7.4 rainy days.
- What is the air quality in Charleston in October?
- Charleston has a mean US Air Quality Index of about 40 in October.