Charleston Weather in August
United States · 30-year monthly averages
⚠️ Challenging time to visit
August in Charleston is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 23°C (73°F). Expect roughly 177mm of precipitation spread over about 11 rainy days, and this is one of the wetter months.
Avg high
32°C
90°F
Avg low
23°C
73°F
Rainfall
177mm
rainy
Rainy days
11
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
August vs the rest of the year
FAQ
- How hot is Charleston in August?
- August in Charleston is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 23°C (73°F). Expect roughly 177mm of precipitation spread over about 11 rainy days, and this is one of the wetter months.
- Does it rain a lot in Charleston in August?
- Charleston sees around 177mm of precipitation in August on average — rainy by global standards.
- Is August a good time to visit Charleston?
- August is a challenging month to visit Charleston weather-wise — plan around the conditions.