Charleston weather in August
August in Charleston averages 90°F by day and 73°F at night, with 7.0 inches of precipitation. It is the 2nd-warmest and 1st-wettest month of the year here.
- Average high
- 90°F-2° vs July
- Average low
- 73°F0 nights below freezing
- Precipitation
- 7.0 in9 days with 0.1 in. or more
- Snow
- 0.0 in17 days at 90°F+
Is August a good time to visit Charleston?
August is hot. Average highs reach 90°F, with about 17 days at 90°F or more. The most comfortable months overall are March to May and October to November.
On August 15 the sun rises at 6:43 am and sets at 8:04 pm, giving 13h 21m of daylight. Daylight all year.
What to pack for Charleston in August
- Light, breathable clothes, a hat and sunscreen; carry water
- An umbrella or rain jacket
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
August nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Charleston | 90°F | 73°F | 7.0 in | |
| North Charleston, SC | 4 mi | 90°F | 73°F | 7.0 in |
| Mount Pleasant, SC | 7 mi | 90°F | 73°F | 7.0 in |
| Savannah, GA | 87 mi | 91°F | 73°F | 5.5 in |
| Columbia, SC | 101 mi | 91°F | 71°F | 4.7 in |
| Augusta, GA | 131 mi | 93°F | 71°F | 4.6 in |
| Wilmington, NC | 153 mi | 88°F | 72°F | 8.2 in |
Frequently asked questions
What is the weather like in Charleston in August?
In August, Charleston averages a high of 90°F and a low of 73°F, with 7.0 inches of precipitation (NOAA 1991-2020 normals).
Is August a good time to visit Charleston?
August is hot in Charleston, with average highs of 90°F. Plan outdoor time for mornings and evenings.
Does it snow in Charleston in August?
Rarely. The August snowfall normal is under half an inch.
Before and after: Charleston in July and Charleston in September. All twelve months: Charleston weather by month.
NOAA NCEI 1991-2020 climate normals, station Charleston Intl. Airport, SC, 8 miles from the city center.