July in Charleston averages a daily high of 31°C with nights around 25.2°C. Expect roughly 11.9 wet days totalling 133.3mm. Generally workable, with some weather to plan around.
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 July data.