Charleston weather in March
March in Charleston: nice, a little rain — an excellent time to visit.
#3 of 12 months in Charleston · #120 of 604 destinations to visit in March · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Charleston climate normals — March
| Daytime high | 20°C / 68°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 55°F | |
| Feels like (high) | 20°C / 68°F | |
| Rainfall | 71 mm / 2.8 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 11°C / 52°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 12 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 53 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Charleston in March — FAQ
- Is March a good time to visit Charleston?
- March in Charleston: nice, a little rain — an excellent time to visit. It ranks #3 of 12 months for Charleston on SeasonMap's comfort score (85/100).
- What is the weather like in Charleston in March?
- In March, Charleston averages a daily high of 19.9°C and a low of 12.9°C, with about 70.8 mm of rain over roughly 7.2 rainy days.
- What is the air quality in Charleston in March?
- Charleston has a mean US Air Quality Index of about 53 in March.