Charleston
August
Weather in Charleston for August 2025
Your guide to Charleston weather in August - trends and predictions
In general, the average temperature in Charleston at the beginning of August is 28.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.6 °F by the end of August.
Charleston experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
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8
Dry days
23
Rainy days
0
Snow days
29°/24°
Temperatures
22 km/h
Avg max wind
76 %
Avg humidity
Charleston in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  31° | 3  31° | ||||
| 4 27° | 5  25° | 6 27° | 7 29° | 8 26° | 9  29° | 10 31° |
| 11 32° | 12 32° | 13 33° | 14  30° | 15  29° | 16 29° | 17 30° |
| 18 31° | 19 32° | 20 28° | 21 28° | 22 28° | 23 24° | 24 27° |
| 25 28° | 26 29° | 27 29° | 28 31° | 29 30° | 30 30° | 31 30° |
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Temperatures trend during August in Charleston
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Sunny | 32° /23° | 1.4 mm | 8 | |
| Aug. 2 | Patchy light rain with thunder | 31° /24° | 4.1 mm | 7 | |
| Aug. 3 | Patchy rain possible | 31° /26° | 3.7 mm | 7 | |
| Aug. 4 | Light rain shower | 27° /24° | 18.4 mm | 6 | |
| Aug. 5 | Moderate or heavy rain shower | 25° /23° | 111.1 mm | 6 | |
| Aug. 6 | Moderate or heavy rain shower | 27° /24° | 77 mm | 6 | |
| Aug. 7 | Patchy light rain with thunder | 29° /25° | 51.8 mm | 6 | |
| Aug. 8 | Light rain shower | 26° /25° | 21.3 mm | 6 | |
| Aug. 9 | Moderate or heavy rain with thunder | 29° /24° | 39.8 mm | 6 | |
| Aug. 10 | Moderate rain at times | 31° /25° | 7.3 mm | 7 | |
| Aug. 11 | Patchy rain possible | 32° /25° | 3.7 mm | 7 | |
| Aug. 12 | Patchy rain possible | 32° /24° | 2.3 mm | 7 | |
| Aug. 13 | Patchy rain possible | 33° /26° | 2.1 mm | 7 | |
| Aug. 14 | Patchy light rain | 30° /24° | 7 mm | 7 | |
| Aug. 15 | Partly cloudy | 29° /25° | 0 mm | 7 | |
| Aug. 16 | Sunny | 29° /23° | 0 mm | 7 | |
| Aug. 17 | Partly cloudy | 30° /23° | 0 mm | 8 | |
| Aug. 18 | Patchy rain possible | 31° /25° | 5 mm | 7 | |
| Aug. 19 | Partly cloudy | 32° /24° | 0.1 mm | 8 | |
| Aug. 20 | Patchy light rain with thunder | 28° /23° | 4.9 mm | 6 | |
| Aug. 21 | Patchy rain possible | 28° /23° | 0.7 mm | 6 | |
| Aug. 22 | Light rain shower | 28° /24° | 0.9 mm | 6 | |
| Aug. 23 | Light rain shower | 24° /21° | 14.8 mm | 5 | |
| Aug. 24 | Light rain shower | 27° /21° | 6.2 mm | 6 | |
| Aug. 25 | Patchy rain possible | 28° /22° | 0.2 mm | 6 | |
| Aug. 26 | Patchy rain possible | 29° /23° | 0.6 mm | 6 | |
| Aug. 27 | Patchy rain possible | 29° /24° | 0.2 mm | 6 | |
| Aug. 28 | Sunny | 31° /24° | 0 mm | 8 | |
| Aug. 29 | Moderate rain at times | 30° /24° | 2.2 mm | 7 | |
| Aug. 30 | Patchy rain possible | 30° /24° | 1.4 mm | 7 | |
| Aug. 31 | Patchy rain possible | 30° /24° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Charleston in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Charleston forecast closer to your planned date for the most up-to-date weather information.
Charleston in August - FAQ
What are the expected maximum and minimum temperatures in Charleston during August?
During August, expect a variety of temperatures with highs around 29° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Charleston during August?
Significant rainfall exceeding 388.2 mm is expected in Charleston during August, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Charleston during August?
The average wind speed in Charleston during August is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
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