Charleston (SC)
August
Weather in Charleston, South Carolina for August 2026
Your guide to Charleston weather in August - trends and predictions
Until now, August 2026 in Charleston has been nearly identical to the historical average, with a temperature of 30.3 °F (showing only a slight deviation of 0.4 °F).
The forecast for the upcoming days in Charleston predicts a temperature of 32.9 °F, which is slightly above the historical average.
In general, the average temperature in Charleston at the beginning of August is 30.1 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.6 °F by the end of August.
Charleston experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 488.2 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
30°/24°
Temperatures
20 km/h
Avg max wind
76 %
Avg humidity
Charleston Weather August
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Temperatures trend during August in Charleston
See the weather trend as well as the moving average line
August weather in Charleston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Moderate or heavy rain shower | 33° /25° | 5.8 mm | 8 | |
| Aug. 2 |  Patchy light rain with thunder | 31° /24° | 12.5 mm | 6 | |
| Aug. 3 |  Patchy rain possible | 30° /24° | 13.7 mm | 6 | |
| Aug. 4 | Light rain shower | 28° /24° | 18 mm | 6 | |
| Aug. 5 | Moderate or heavy rain shower | 30° /23° | 80.1 mm | 7 | |
| Aug. 6 | Moderate or heavy rain shower | 29° /25° | 35.6 mm | 7 | |
| Aug. 7 | Moderate or heavy rain shower | 30° /25° | 26.3 mm | 8 | |
| Aug. 8 | Moderate or heavy rain shower | 28° /25° | 13.1 mm | 7 | |
| Aug. 9 |  Moderate or heavy rain with thunder | 30° /24° | 23.2 mm | 7 | |
| Aug. 10 |  Sunny | 33° /27° | 4.6 mm | 10.3 | |
| Aug. 11 | Sunny | 35° /26° | 0.5 mm | 10 | |
| Aug. 12 | Sunny | 36° /25° | 0.4 mm | 9.5 | |
| Aug. 13 | Sunny | 37° /25° | 3.2 mm | 9.3 | |
| Aug. 14 | Sunny | 35° /26° | 6.6 mm | 9.1 | |
| Aug. 15 | Sunny | 33° /25° | 4.6 mm | 8 | |
| Aug. 16 | Sunny | 31° /26° | 1.5 mm | 8 | |
| Aug. 17 | Sunny | 32° /24° | 8 mm | 8 | |
| Aug. 18 |  Partly cloudy | 32° /24° | 4 mm | 8 | |
| Aug. 19 | Patchy rain possible | 29° /24° | 17.7 mm | 6 | |
| Aug. 20 | Sunny | 30° /25° | 1.4 mm | 8 | |
| Aug. 21 | Patchy rain possible | 31° /26° | 0.8 mm | 8 | |
| Aug. 22 | Sunny | 33° /26° | 0 mm | 8 | |
| Aug. 23 | Sunny | 33° /26° | 0.2 mm | 8 | |
| Aug. 24 | Light rain shower | 28° /22° | 4.7 mm | 6 | |
| Aug. 25 | Patchy rain possible | 31° /23° | 0.1 mm | 7 | |
| Aug. 26 | Patchy rain possible | 30° /22° | 0.3 mm | 7 | |
| Aug. 27 | Patchy rain possible | 29° /23° | 0.1 mm | 6 | |
| Aug. 28 | Sunny | 30° /24° | 0 mm | 7 | |
| Aug. 29 | Moderate rain at times | 31° /23° | 1.1 mm | 7 | |
| Aug. 30 | Patchy rain possible | 28° /23° | 17.7 mm | 7 | |
| Aug. 31 | Patchy rain possible | 28° /23° | 42.9 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.
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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 30° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Charleston during August?
Significant rainfall exceeding 488.2 mm is expected in Charleston during August, occurring over more than 22 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 20 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Charleston
Explore the daily rainfall trends and prepare for Charlestons August weather 💧
Typically, Charleston has 22 rainy days in August with a total of 488.2 mm of rainfall.
UV exposure in Charleston during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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