United StatesAverage weather for Hilton Head Island in September
It's hot in September in Hilton Head Island with an average temperature of 30°C. Temperatures this month range from a low of 28°C to a high of 32°C. At night, you can expect temperatures between 20°C and 24°C.
Start of September
The month of September starts in Hilton Head Island with hot temps, averaging around 32°C during the day and nights around 24°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps drop to around 30°C, with nights around 23°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Hilton Head Island is around 29°C, while nighttime temps are about 22°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 107 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Hilton Head Island in September |
New York | ||
|---|---|---|---|
 Average temperature |
30°C | 27°C | |
 Max. temperature |
32°C | 31°C | |
| Min. temperature |
28°C | -5°C | |
 Total precipitation |
107 mm | 57 mm | |
| Rainy days |
10 days | 9 days | |
August
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is September a good time to visit Hilton Head Island?
Looking for sun? September isn’t a good month to be in Hilton Head Island. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 36°C in 2020, Hilton Head Island reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 17°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 27°C.
Check out the climate of Hilton Head Island for all months and discover the best travel time
Daily Temperature in September in Hilton Head Island
This chart shows the average daily high and low temperatures in September for Hilton Head Island, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Hilton Head Island
The chart below shows the average daily precipitation in September for Hilton Head Island, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 10 days of precipitation in Hilton Head Island.
Daily UV index in September in Hilton Head Island
This chart shows the average daily UV index in September in Hilton Head Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Hilton Head Island over the years
This chart shows the average temperature in September in Hilton Head Island, measured in degrees Celsius, over the past few years.
Total precipitation in September in Hilton Head Island over the years
This chart shows the average precipitation in September in Hilton Head Island, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Hilton Head Island
Click on any day in September to get detailed info about the usual weather on that day in Hilton Head Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Hilton Head Island
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Average weather in Hilton Head Island by month
Click on a month below to see detailed weather info for Hilton Head Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Hilton Head Island for all months at once
