Saint Simons Island (GA)
September
Weather in Saint Simons Island, Georgia for September 2026
Your guide to Saint Simons Island weather in September - trends and predictions
So far, September 2026 in Saint Simons Island is slightly warmer than the historical average by 1.6 °F.
The forecast for the next days in Saint Simons Island predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Saint Simons Island at the beginning of September is 29.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 28 °F by the end of September.
Saint Simons Island experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 274.2 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
27°/23°
Temperatures
21 km/h
Avg max wind
79 %
Avg humidity
Saint Simons Island Weather September
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Temperatures trend during September in Saint Simons Island
See the weather trend as well as the moving average line
September weather in Saint Simons Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 28° /24° | 28.6 mm | 9 | |
| Sept. 2 | Moderate or heavy rain shower | 28° /24° | 21 mm | 6 | |
| Sept. 3 |  Cloudy | 30° /24° | 1.1 mm | 8 | |
| Sept. 4 | Cloudy | 29° /25° | 0 mm | 6 | |
| Sept. 5 |  Sunny | 32° /24° | 0 mm | 10 | |
| Sept. 6 |  Fog | 31° /23° | 48.9 mm | 8 | |
| Sept. 7 |  Thundery outbreaks possible | 27° /23° | 328.4 mm | 4 | |
| Sept. 8 | Moderate or heavy rain shower | 29° /24° | 43.4 mm | 7 | |
| Sept. 9 | Moderate or heavy rain shower | 28° /24° | 30.2 mm | 5 | |
| Sept. 10 |  Overcast | 29° /24° | 1.4 mm | 5 | |
| Sept. 11 |  Partly cloudy | 28° /22° | 67.1 mm | 6 | |
| Sept. 12 | Sunny | 29° /22° | 4.3 mm | 6 | |
| Sept. 13 | Partly cloudy | 31° /23° | 0.6 mm | 5 | |
| Sept. 14 | Sunny | 32° /22° | 1.1 mm | 7 | |
| Sept. 15 | Cloudy | 30° /23° | 2.5 mm | 6 | |
| Sept. 16 | Sunny | 29° /22° | 0.8 mm | 6 | |
| Sept. 17 | Partly cloudy | 28° /23° | 0 mm | 7 | |
| Sept. 18 | Overcast | 32° /22° | 0 mm | 8.3 | |
| Sept. 19 | Overcast | 32° /21° | 0 mm | 7.4 | |
| Sept. 20 | Overcast | 30° /23° | 1.7 mm | 4.5 | |
| Sept. 21 | Sunny | 33° /23° | 4.3 mm | 8 | |
| Sept. 22 |  Light rain shower | 34° /23° | 8.6 mm | 8 | |
| Sept. 23 | Patchy rain possible | 33° /24° | 1.4 mm | 8 | |
| Sept. 24 | Sunny | 34° /24° | 0 mm | 8 | |
| Sept. 25 | Sunny | 33° /24° | 2.1 mm | 8 | |
| Sept. 26 | Overcast | 25° /22° | 0.2 mm | 6 | |
| Sept. 27 | Patchy rain possible | 24° /22° | 1.8 mm | 5 | |
| Sept. 28 | Light rain shower | 24° /22° | 21.2 mm | 5 | |
| Sept. 29 | Light rain shower | 27° /22° | 9.6 mm | 6 | |
| Sept. 30 | Overcast | 29° /21° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Saint Simons Island 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 Saint Simons Island forecast closer to your planned date for the most up-to-date weather information.
Change Month
Saint Simons Island in September - FAQ
What are the expected maximum and minimum temperatures in Saint Simons Island during September?
During September, expect a variety of temperatures with highs around 27° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint Simons Island during September?
Significant rainfall exceeding 274.2 mm is expected in Saint Simons Island during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Simons Island during September?
The average wind speed in Saint Simons Island during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Simons Island
Explore the daily rainfall trends and prepare for Saint Simons Islands September weather 💧
Typically, Saint Simons Island has 8 rainy days in September with a total of 274.2 mm of rainfall.
UV exposure in Saint Simons Island during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Saint Simons Island?Get accurate weather forecasts for Saint Simons Island, located at latitude 31.151 and longitude -81.37. Stay updated with localized weather information tailored for Saint Simons Island.
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