Hilton Head Island Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is at Hilton Head Island, South Carolina during each month of the year.
The average high and low temperatures are listed below monthly and annually for Hilton Head, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 70, 80 or 90 °F each month on the Island, scroll down farther. There are also monthly and yearly counts of days with cold weather.
All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 60 | 40 | January | 16 | 4 |
| 63 | 42 | February | 17 | 6 |
| 69 | 49 | March | 21 | 9 |
| 75 | 55 | April | 24 | 13 |
| 82 | 63 | May | 28 | 17 |
| 86 | 71 | June | 30 | 22 |
| 89 | 74 | July | 32 | 23 |
| 88 | 73 | August | 31 | 23 |
| 84 | 69 | September | 29 | 21 |
| 77 | 59 | October | 25 | 15 |
| 70 | 50 | November | 21 | 10 |
| 62 | 43 | December | 16 | 6 |
| 76 | 57 | Year | 24 | 14 |
Days of Hot Weather in Hilton Head Island
Hilton Head can get 90-degree weather between May and September. But the thermometer rarely tops 100 °F (38 °C). That kind of heat descends on the island an average of just once every two years. July is when a day is most likely to get that hot.
| 70 °F 21 °C |
80 °F 27 °C |
90 °F 32 °C | |
|---|---|---|---|
| January | 3 | 0 | 0 |
| February | 6 | 0 | 0 |
| March | 6 | 2 | 0 |
| April | 24 | 6 | 0 |
| May | 31 | 21 | 1 |
| June | 30 | 28 | 6 |
| July | 31 | 31 | 12 |
| August | 31 | 30 | 9 |
| September | 30 | 24 | 3 |
| October | 26 | 9 | 0 |
| November | 16 | 2 | 0 |
| December | 6 | 0 | 0 |
| Year | 248 | 152 | 32 |
How Often Hilton Head Island Has Cold Temperatures
Freezing temperatures can occur at Hilton Head from November to March. On the coldest nights, it can drop to 20 °F (-8 °C) or lower. Weather that chilly happens about once a year, on average, usually in December, January or February.
| 32 °F 0 °C |
40 °F 4 °C |
50 °F 10 °C | |
|---|---|---|---|
| January | 7 | 16 | 27 |
| February | 4 | 11 | 22 |
| March | 1 | 6 | 16 |
| April | 0 | 1 | 9 |
| May | 0 | 0 | 1 |
| June | 0 | 0 | 0 |
| July | 0 | 0 | 0 |
| August | 0 | 0 | 0 |
| September | 0 | 0 | 0 |
| October | 0 | 0 | 5 |
| November | 1 | 5 | 15 |
| December | 4 | 13 | 24 |
| Year | 17 | 52 | 118 |
Reference
NOAA National Centers for Environmental Information. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)