Charleston in August
Not the best time
August is Charleston's least comfortable month for tourists. The heat is relentless and the humidity soul-crushing. Unless you're specifically here for beaches or have serious heat tolerance, consider other months.
Weather
August continues the summer assault with temperatures in the upper 80s and brutal humidity. The heat index often pushes into the 90s. Afternoon thunderstorms provide brief relief but also add to the oppressive mugginess.
32°C high24°C low12 rain days
Crowds & Cost
moderate crowds
~$220/day average
August Tips
- •This is hurricane season - keep an eye on weather forecasts
- •Many locals plan indoor activities during peak afternoon hours
- •Beach time is essential for cooling off
All Months
Spring and fall own Charleston's calendar. March through May brings 70-80 degree days, blooming azaleas, and the Charleston Wine + Food Festival in March. October and November deliver the same perfect temperatures with fewer crowds and lower hotel rates.
Summer means heat, humidity, and afternoon thunderstorms. July averages 89 degrees with 80% humidity — locals flee to the mountains or coast. But summer also brings cheaper accommodations and easier restaurant reservations. Plus, those afternoon storms cool things down for evening strolls.
Winter rarely drops below 40 degrees, making it pleasant for walking tours and outdoor dining. December through February sees the fewest tourists and lowest prices. Holiday decorations make the historic homes even more photogenic.
Avoid these dates unless you book far ahead: Spoleto Festival USA in late May/early June, Charleston Fashion Week in March, and any major University of South Carolina football weekend. Hotel rates triple and restaurants fill up.
Charleston Scores
Solo
7/10
Couples
9/10
Families
8/10
Adventure
4/10
Budget
6/10
Luxury
8/10
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