Hilton Head Island (SC)
September
Weather in Hilton Head Island, South Carolina for September 2026
Your guide to Hilton Head Island weather in September - trends and predictions
So far, September 2026 in Hilton Head Island is slightly warmer than the historical average by 1.6 °F.
Expect cooler weather in the next days in Hilton Head Island with the forecast suggesting a temperature of 26.2 °F, lower than the historical average.
In general, the average temperature in Hilton Head Island at the beginning of September is 29.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27.1 °F by the end of September.
Hilton Head Island in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 153.6 mm.
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Temperatures
Rain 🌧️
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13
Dry days
17
Rainy days
0
Snow days
27°/23°
Temperatures
24 km/h
Avg max wind
79 %
Avg humidity
Hilton Head Island Weather September
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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 in Hilton Head Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 29° /24° | 1.7 mm | 7 | |
| Sept. 2 |  Sunny | 30° /24° | 1.6 mm | 7 | |
| Sept. 3 | Light rain shower | 29° /23° | 4.6 mm | 8 | |
| Sept. 4 | Sunny | 30° /24° | 1.3 mm | 8 | |
| Sept. 5 | Light rain shower | 30° /24° | 2.4 mm | 8 | |
| Sept. 6 |  Moderate or heavy rain shower | 30° /24° | 13.7 mm | 7 | |
| Sept. 7 |  Light rain | 28° /23° | 14.5 mm | 6 | |
| Sept. 8 | Moderate or heavy rain shower | 25° /21° | 53.9 mm | 5 | |
| Sept. 9 | Light rain shower | 27° /22° | 49.7 mm | 5 | |
| Sept. 10 | Patchy rain possible | 28° /22° | 1.3 mm | 6 | |
| Sept. 11 | Patchy rain possible | 28° /23° | 4.5 mm | 5 | |
| Sept. 12 | Moderate or heavy rain shower | 28° /23° | 7.8 mm | 7 | |
| Sept. 13 | Light rain shower | 30° /23° | 1.8 mm | 5 | |
| Sept. 14 | Light rain shower | 29° /23° | 3.1 mm | 7 | |
| Sept. 15 | Light rain shower | 28° /23° | 1.8 mm | 5 | |
| Sept. 16 | Patchy rain possible | 27° /22° | 0.1 mm | 6 | |
| Sept. 17 | Sunny | 28° /21° | 0 mm | 8 | |
| Sept. 18 |  Partly cloudy | 29° /24° | 0 mm | 8 | |
| Sept. 19 | Sunny | 30° /24° | 2.9 mm | 7 | |
| Sept. 20 | Partly cloudy | 28° /23° | 2.9 mm | 5 | |
| Sept. 21 |  Cloudy | 28° /23° | 0.4 mm | 6 | |
| Sept. 22 |  Fog | 27° /23° | 3 mm | 5 | |
| Sept. 23 | Cloudy | 28° /22° | 0.8 mm | 4 | |
| Sept. 24 |  Overcast | 25° /21° | 8.2 mm | 5 | |
| Sept. 25 | Partly cloudy | 27° /21° | 1.4 mm | 7 | |
| Sept. 26 | Moderate or heavy rain shower | 28° /25° | 4 mm | 7 | |
| Sept. 27 | Overcast | 28° /17° | 0 mm | 7 | |
| Sept. 28 | Sunny | 27° /19° | 0 mm | 7.2 | |
| Sept. 29 | Sunny | 28° /24° | 2.9 mm | 7.3 | |
| Sept. 30 | Sunny | 27° /24° | 1.2 mm | 7.2 | |
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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.
Change Month
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 153.6 mm is expected in Hilton Head Island during September, occurring over more than 17 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 24 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 💧
Typically, Hilton Head Island has 17 rainy days in September with a total of 153.6 mm of rainfall.
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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Where is Hilton Head Island?Get accurate weather forecasts for Hilton Head Island, located at latitude 32.194 and longitude -80.738. Stay updated with localized weather information tailored for Hilton Head Island.
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