March in Charleston averages a daily high of 19.1°C with nights around 11.5°C. Expect roughly 8.1 wet days totalling 78.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Charleston is March–May.
Based on DOWNTOWN CHARLESTON, SC US (0.8km), 1995–2024. 30 years of March data.