Hilton Head Island
September
Weather in Hilton Head Island for September 2025
Your guide to Hilton Head Island weather in September - trends and predictions
In general, the average temperature in Hilton Head Island at the beginning of September is 26.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 27.3 °F by the end of September.
The climate of Hilton Head Island in September is notably wet, with an average of 15 rainy days, and a total of 224.5 mm of precipitation.
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Temperatures
Rain 🌧️
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15
Dry days
15
Rainy days
0
Snow days
27°/23°
Temperatures
27 km/h
Avg max wind
82 %
Avg humidity
Hilton Head Island in September average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  29° | 2 29° | 3 26° | 4 27° | 5 27° | 6  25° | |
| 7  23° | 8 22° | 9 24° | 10 26° | 11 26° | 12 25° | 13 28° |
| 14 25° | 15 26° | 16 25° | 17  28° | 18  29° | 19 29° | 20 26° |
| 21  25° | 22  26° | 23 30° | 24  26° | 25 26° | 26 26° | 27  29° |
| 28 28° | 29 27° | 30 29° |
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Temperatures trend during September in Hilton Head Island
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Patchy rain possible | 29° /26° | 0.1 mm | 6 | |
| Sept. 2 | Patchy rain possible | 29° /26° | 4.8 mm | 6 | |
| Sept. 3 | Light rain shower | 26° /24° | 13.9 mm | 6 | |
| Sept. 4 | Light rain shower | 27° /22° | 3.9 mm | 6 | |
| Sept. 5 | Light rain shower | 27° /23° | 7.3 mm | 6 | |
| Sept. 6 | Moderate or heavy rain shower | 25° /23° | 41 mm | 6 | |
| Sept. 7 | Light rain | 23° /21° | 32.4 mm | 5 | |
| Sept. 8 | Moderate or heavy rain shower | 22° /21° | 16 mm | 5 | |
| Sept. 9 | Light rain shower | 24° /22° | 6.6 mm | 5 | |
| Sept. 10 | Patchy rain possible | 26° /21° | 0.2 mm | 6 | |
| Sept. 11 | Patchy rain possible | 26° /25° | 0.1 mm | 6 | |
| Sept. 12 | Moderate or heavy rain shower | 25° /24° | 14 mm | 6 | |
| Sept. 13 | Light rain shower | 28° /24° | 4.5 mm | 6 | |
| Sept. 14 | Light rain shower | 25° /22° | 1.7 mm | 6 | |
| Sept. 15 | Light rain shower | 26° /23° | 3.1 mm | 6 | |
| Sept. 16 | Patchy rain possible | 25° /21° | 0.1 mm | 6 | |
| Sept. 17 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 18 | Partly cloudy | 29° /25° | 0 mm | 7 | |
| Sept. 19 | Sunny | 29° /24° | 0 mm | 7 | |
| Sept. 20 | Partly cloudy | 26° /23° | 0 mm | 7 | |
| Sept. 21 | Cloudy | 25° /23° | 0 mm | 6 | |
| Sept. 22 | Fog | 26° /22° | 0 mm | 6 | |
| Sept. 23 | Cloudy | 30° /24° | 0 mm | 6 | |
| Sept. 24 | Overcast | 26° /24° | 0 mm | 6 | |
| Sept. 25 | Partly cloudy | 26° /24° | 0 mm | 7 | |
| Sept. 26 | Moderate or heavy rain shower | 26° /26° | 6.3 mm | 6 | |
| Sept. 27 | Torrential rain shower | 29° /26° | 64.9 mm | 6 | |
| Sept. 28 | Partly cloudy | 28° /24° | 0 mm | 7 | |
| Sept. 29 | Overcast | 27° /25° | 3.7 mm | 6 | |
| Sept. 30 | Sunny | 29° /25° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Hilton Head 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 Hilton Head Island forecast closer to your planned date for the most up-to-date weather information.
Hilton Head Island in September - FAQ
What are the expected maximum and minimum temperatures in Hilton Head 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 Hilton Head Island during September?
Significant rainfall exceeding 224.5 mm is expected in Hilton Head Island during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hilton Head Island during September?
The average wind speed in Hilton Head Island during September is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hilton Head Island
Explore the daily rainfall trends and prepare for Hilton Head Islands September weather 💧
UV exposure in Hilton Head Island during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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