Weather in Charleston in August
Charleston, United States averages a high of 28.6°C (83.5°F) and low of 19.5°C (67.1°F) in August, with 8 rain days and 11.5 hours of daily sunshine. Travel score: 86.9/100 (Excellent). The best time to visit Charleston is September.
High
29°C83°F
Low
20°C67°F
🌧️
8
rain days
☀️
11.5
hrs/day sunshine
💧
70%
humidity
87— Excellent
August in Charleston is hot and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Charleston?
How much does it rain in Charleston in August?
Charleston receives an average of 67.2mm of rainfall across 8 rainy days in August. The annual total is 1008.5mm.
What should I pack for Charleston in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 29°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in August?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31