South Carolina (Charleston)
September
Weather in South Carolina for September 2026
Your guide to South Carolina weather in September - trends and predictions
In general, the average temperature in South Carolina at the beginning of September is 28.6 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.9 °F by the end of September.
South Carolina in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 214.6 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
14
Dry days
16
Rainy days
0
Snow days
28°/22°
Temperatures
21 km/h
Avg max wind
75 %
Avg humidity
South Carolina Weather September
Move between months or click on a day
What’s the Weather Like in South Carolina This September?
Discover the average temperatures and weather trends across South Carolina’s cities this September.
Temperatures trend during September in South Carolina
See the weather trend as well as the moving average line
September weather in South Carolina day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 29° /23° | 1.5 mm | 7 | |
| Sept. 2 | Patchy rain possible | 30° /24° | 0.7 mm | 7 | |
| Sept. 3 | Light rain shower | 27° /23° | 1 mm | 7 | |
| Sept. 4 | Light rain shower | 29° /22° | 1.3 mm | 7 | |
| Sept. 5 | Patchy rain possible | 30° /23° | 0.8 mm | 7 | |
| Sept. 6 | Light rain shower | 29° /22° | 6.8 mm | 7 | |
| Sept. 7 |  Heavy rain | 26° /22° | 60 mm | 6 | |
| Sept. 8 | Light rain shower | 23° /20° | 15.7 mm | 6 | |
| Sept. 9 | Light rain shower | 25° /20° | 3.5 mm | 6 | |
| Sept. 10 | Patchy rain possible | 28° /20° | 0.1 mm | 6 | |
| Sept. 11 | Patchy rain possible | 27° /21° | 0 mm | 6 | |
| Sept. 12 |  Mist | 28° /23° | 1.9 mm | 6 | |
| Sept. 13 | Mist | 30° /22° | 2.2 mm | 7 | |
| Sept. 14 |  Overcast | 29° /21° | 0.7 mm | 7 | |
| Sept. 15 |  Partly cloudy | 30° /21° | 0.5 mm | 7 | |
| Sept. 16 | Partly cloudy | 28° /20° | 0 mm | 7 | |
| Sept. 17 |  Cloudy | 29° /19° | 19.7 mm | 6 | |
| Sept. 18 | Cloudy | 30° /22° | 0 mm | 6 | |
| Sept. 19 | Cloudy | 31° /21° | 3.5 mm | 7 | |
| Sept. 20 | Overcast | 30° /21° | 0 mm | 7 | |
| Sept. 21 | Light rain shower | 28° /21° | 0.6 mm | 6 | |
| Sept. 22 | Overcast | 29° /21° | 0 mm | 7 | |
| Sept. 23 | Overcast | 28° /20° | 0.3 mm | 6 | |
| Sept. 24 |  Sunny | 31° /22° | 0 mm | 7 | |
| Sept. 25 | Sunny | 32° /23° | 0 mm | 7 | |
| Sept. 26 | Torrential rain shower | 30° /23° | 16.5 mm | 6 | |
| Sept. 27 | Patchy rain possible | 27° /23° | 40 mm | 6 | |
| Sept. 28 | Patchy rain possible | 27° /20° | 0 mm | 6 | |
| Sept. 29 | Overcast | 28° /22° | 12.9 mm | 6 | |
| Sept. 30 | Overcast | 27° /21° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for South Carolina in September 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 South Carolina forecast closer to your planned date for the most up-to-date weather information.
Change Month
South Carolina in September - FAQ
What are the expected maximum and minimum temperatures in South Carolina during September?
During September, expect a variety of temperatures with highs around 28° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in South Carolina during September?
Significant rainfall exceeding 214.6 mm is expected in South Carolina during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in South Carolina during September?
The average wind speed in South Carolina during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in South Carolina
Explore the daily rainfall trends and prepare for South Carolinas September weather 💧
UV exposure in South Carolina during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Counties in South Carolina
Select a county for an accurate weather forecast
Top locations in South Carolina
Select a location for an accurate weather forecast
More Locations Quick links
More South Carolina weather pages
You are here
Where is South Carolina?Get accurate weather forecasts for South Carolina, located at latitude 32.777 and longitude -79.931. Stay updated with localized weather information tailored for South Carolina.
Found a mistake?
We appreciate your attention to details. Tell us here.