Weather in Charleston: August
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Average day temperature: | 82.9°F |
| Average night temperature: | 66.9°F | |
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Number of sunny days: | 11 days |
| Day length: | 13.0 - 14.1 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.5 in. | |
| more information | ||
14 days
forecast
forecast
| Charleston |
weather in
September
September
| Charleston |
Air temperature in August, °F
Show year:
2026
2025
2024
The highest day temperature during August of 2026 was 93°F. At the same time the lowest night temperature was 58°F. Daily and nightly averages during August were 83.2°F and 68.4°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in August is almost equal.
Precipitation total in August, in.
Precipitation total value in Charleston in August is 1.5 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 3.9 mph It makes August lest windy month of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 8.2.
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 06:10
September 19, saturday
0900
66°F
W
1 mph
1 mph
1200
79°F
S
2 mph
2 mph
1500
84°F
SE
4 mph
4 mph
1800
82°F
S
2 mph
2 mph
2100
73°F
NW
4 mph
4 mph
September 20, sunday
0000
72°F
NW
4 mph
4 mph
0300
68°F
NW
3 mph
3 mph
0600
68°F
NW
3 mph
3 mph
