Saint Augustine (FL)
September
Weather in Saint Augustine, Florida for September 2025
Your guide to Saint Augustine weather in September - trends and predictions
Coastal Flood Advisory - See hour by hour.
Until now, September 2025 in Saint Augustine is slightly cooler than the historical average by -0.6 °F.
The forecast for the upcoming days in Saint Augustine predicts a temperature of 29.4 °F, which is slightly above the historical average.
In general, the average temperature in Saint Augustine at the beginning of September is 28.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 30.1 °F by the end of September.
Saint Augustine experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 291.3 mm.
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Temperatures
Rain 🌧️
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7
Dry days
23
Rainy days
0
Snow days
29°/24°
Temperatures
18 km/h
Avg max wind
79 %
Avg humidity
Saint Augustine Weather September
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Temperatures trend during September in Saint Augustine
See the weather trend as well as the moving average line
September weather in Saint Augustine day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 28° /25° | 31.7 mm | 6 | |
| Sept. 2 |  Moderate or heavy rain shower | 29° /25° | 29 mm | 7 | |
| Sept. 3 | Patchy rain possible | 29° /25° | 12.4 mm | 6 | |
| Sept. 4 | Moderate or heavy rain shower | 30° /25° | 4.7 mm | 7 | |
| Sept. 5 | Moderate or heavy rain shower | 29° /25° | 11.5 mm | 7 | |
| Sept. 6 | Moderate or heavy rain shower | 29° /24° | 9 mm | 7 | |
| Sept. 7 | Patchy rain possible | 28° /24° | 0.8 mm | 6 | |
| Sept. 8 | Moderate or heavy rain shower | 27° /23° | 31.7 mm | 6 | |
| Sept. 9 | Moderate or heavy rain shower | 27° /24° | 29.8 mm | 6 | |
| Sept. 10 | Patchy rain possible | 26° /24° | 70.6 mm | 6 | |
| Sept. 11 | Moderate or heavy rain shower | 27° /24° | 16.2 mm | 7 | |
| Sept. 12 | Moderate or heavy rain shower | 28° /24° | 9.6 mm | 6 | |
| Sept. 13 |  Heavy rain at times | 28° /24° | 33.8 mm | 6 | |
| Sept. 14 | Moderate or heavy rain shower | 28° /24° | 3 mm | 6 | |
| Sept. 15 | Patchy rain possible | 28° /25° | 6.1 mm | 6 | |
| Sept. 16 |  Partly cloudy | 27° /23° | 0 mm | 2 | |
| Sept. 17 |  Sunny | 31° /24° | 0 mm | 1.9 | |
| Sept. 18 | Partly cloudy | 29° /24° | 0 mm | 1.7 | |
| Sept. 19 | Sunny | 30° /23° | 0 mm | 2 | |
| Sept. 20 |  Moderate rain | 28° /25° | 11.8 mm | 0 | |
| Sept. 21 | Moderate rain | 27° /25° | 16.1 mm | 6 | |
| Sept. 22 | Patchy rain possible | 28° /25° | 1.3 mm | 6 | |
| Sept. 23 | Patchy rain possible | 30° /25° | 0.1 mm | 6 | |
| Sept. 24 | Sunny | 31° /24° | 0 mm | 7 | |
| Sept. 25 | Sunny | 30° /24° | 0 mm | 7 | |
| Sept. 26 | Patchy rain possible | 31° /24° | 0.1 mm | 6 | |
| Sept. 27 | Sunny | 33° /24° | 0 mm | 7 | |
| Sept. 28 | Patchy rain possible | 25° /24° | 1.9 mm | 5 | |
| Sept. 29 | Patchy rain possible | 32° /24° | 0.3 mm | 6 | |
| Sept. 30 | Light rain shower | 29° /26° | 28 mm | 6 | |
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Important Notice
Our weather forecast for Saint Augustine 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 Augustine forecast closer to your planned date for the most up-to-date weather information.
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Saint Augustine in September - FAQ
What are the expected maximum and minimum temperatures in Saint Augustine during September?
During September, 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 Saint Augustine during September?
Significant rainfall exceeding 291.3 mm is expected in Saint Augustine during September, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Augustine during September?
The average wind speed in Saint Augustine during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Augustine
Explore the daily rainfall trends and prepare for Saint Augustines September weather 💧
UV exposure in Saint Augustine during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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