Marco Island (FL)
September
Weather in Marco Island, Florida for September 2026
Your guide to Marco Island weather in September - trends and predictions
Until now, September 2026 in Marco Island has been nearly identical to the historical average, with a temperature of 31.8 °F (showing only a slight deviation of 0.5 °F).
The forecast for the upcoming days in Marco Island predicts a temperature of 29.1 °F, which is slightly above the historical average.
In general, the average temperature in Marco Island at the beginning of September is 31.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.4 °F by the end of September.
Marco Island experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 472.5 mm.
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Temperatures
Rain 🌧️
More
5
Dry days
25
Rainy days
0
Snow days
31°/25°
Temperatures
19 km/h
Avg max wind
78 %
Avg humidity
Marco Island Weather September
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Temperatures trend during September in Marco Island
See the weather trend as well as the moving average line
September weather in Marco Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 31° /25° | 11.3 mm | 7 | |
| Sept. 2 | Moderate or heavy rain shower | 31° /25° | 21.1 mm | 6 | |
| Sept. 3 | Moderate or heavy rain shower | 32° /24° | 4.7 mm | 7 | |
| Sept. 4 | Moderate or heavy rain shower | 32° /25° | 13.6 mm | 7 | |
| Sept. 5 | Moderate or heavy rain shower | 31° /25° | 34.8 mm | 8 | |
| Sept. 6 | Moderate or heavy rain shower | 31° /25° | 80.6 mm | 7 | |
| Sept. 7 |  Heavy rain at times | 31° /26° | 15.2 mm | 7 | |
| Sept. 8 |  Patchy rain possible | 32° /25° | 1.5 mm | 6 | |
| Sept. 9 | Moderate or heavy rain shower | 31° /24° | 24.1 mm | 5 | |
| Sept. 10 | Moderate or heavy rain shower | 31° /25° | 34.1 mm | 6 | |
| Sept. 11 | Moderate or heavy rain shower | 32° /24° | 6.4 mm | 6 | |
| Sept. 12 |  Cloudy | 30° /24° | 7.2 mm | 7 | |
| Sept. 13 | Moderate or heavy rain shower | 31° /24° | 17.1 mm | 6 | |
| Sept. 14 | Heavy rain at times | 32° /25° | 2 mm | 7 | |
| Sept. 15 | Heavy rain at times | 31° /25° | 2 mm | 7 | |
| Sept. 16 | Patchy rain possible | 32° /25° | 0.5 mm | 7 | |
| Sept. 17 | Patchy rain possible | 31° /24° | 23 mm | 7 | |
| Sept. 18 | Moderate or heavy rain shower | 31° /24° | 7 mm | 8 | |
| Sept. 19 | Moderate or heavy rain shower | 31° /23° | 8.2 mm | 8 | |
| Sept. 20 | Moderate or heavy rain shower | 31° /23° | 7.1 mm | 8 | |
| Sept. 21 | Moderate rain at times | 31° /23° | 2.9 mm | 7 | |
| Sept. 22 | Moderate or heavy rain shower | 31° /24° | 8.8 mm | 6 | |
| Sept. 23 | Moderate or heavy rain shower | 32° /24° | 8.8 mm | 5 | |
| Sept. 24 | Moderate rain at times | 33° /24° | 5 mm | 6 | |
| Sept. 25 | Moderate or heavy rain shower | 31° /26° | 37 mm | 7 | |
| Sept. 26 |  Partly cloudy | 29° /23° | 0.1 mm | 9.1 | |
| Sept. 27 |  Overcast | 27° /23° | 0 mm | 8.9 | |
| Sept. 28 | Overcast | 28° /25° | 0 mm | 8.7 | |
| Sept. 29 | Overcast | 29° /25° | 11 mm | 4.9 | |
| Sept. 30 | Light rain shower | 29° /26° | 5.6 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Marco 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 Marco Island forecast closer to your planned date for the most up-to-date weather information.
Change Month
Marco Island in September - FAQ
What are the expected maximum and minimum temperatures in Marco Island during September?
During September, expect a variety of temperatures with highs around 31° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Marco Island during September?
Significant rainfall exceeding 472.5 mm is expected in Marco Island during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Marco Island during September?
The average wind speed in Marco Island during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Marco Island
Explore the daily rainfall trends and prepare for Marco Islands September weather 💧
Typically, Marco Island has 25 rainy days in September with a total of 472.5 mm of rainfall.
UV exposure in Marco Island during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Marco Island?Get accurate weather forecasts for Marco Island, located at latitude 25.941 and longitude -81.718. Stay updated with localized weather information tailored for Marco Island.
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