April in Charleston averages a daily high of 22.7°C with nights around 15.6°C. Expect roughly 6.6 wet days totalling 76.2mm. 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 April data.