Typical August weather
Charleston
South Carolina · August
86° days
77° nights
about 8 rainy days · 13½ hours of daylight · ocean 84°
What to pack
- Umbrella
- Swimsuit
- Sunscreen
What August feels like
August brings the heaviest rain of the year, usually in short violent bursts that pool in the low corners downtown — locals check the tide chart before driving, not the forecast. The tropics are active now, so build a little flexibility into anything you book.
Rain arrives about 8 days of the month, so keep one flexible day in your plans. about 7 afternoons top 90°.
Can you swim?
The ocean runs about 84° — bath-warm.
The numbers
| Typical high | 86° |
|---|---|
| Typical low | 77° |
| Days with real rain | 8 |
| Total rain | 6.1 in |
| Water temperature | 84° |
| Sunrise / sunset (mid-month) | 6:43 am / 8:04 pm |