Climate
Hilton Head Island weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: March, May, November, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Wet days |
|---|---|---|---|---|
| January | 60°F | 40°F | 2.9 in | 9 |
| February | 64°F | 43°F | 2.9 in | 9 |
| March | 70°F | 49°F | 3.1 in | 9 |
| April | 77°F | 56°F | 3.1 in | 9 |
| May | 84°F | 64°F | 2.5 in | 8 |
| June | 89°F | 71°F | 5.0 in | 13 |
| July | 92°F | 75°F | 5.6 in | 13 |
| August | 90°F | 74°F | 6.5 in | 13 |
| September | 86°F | 70°F | 4.0 in | 10 |
| October | 78°F | 59°F | 3.8 in | 8 |
| November | 69°F | 48°F | 2.5 in | 8 |
| December | 63°F | 43°F | 3.2 in | 10 |
NOAA U.S. Climate Normals 1991–2020, Beaufort Mcas, Sc Us (21.2 mi away, 37 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in Hilton Head Island?
July, with an average high of 92°F and low of 75°F.
What is the coldest month in Hilton Head Island?
January, with an average low of 40°F and high of 60°F.
When does it rain most in Hilton Head Island?
August is the wettest month, averaging 6.5 in of precipitation; the year totals about 45.1 inches.
What is the best time to visit Hilton Head Island?
For mild weather (highs between 65°F and 85°F) with the least rain, March, May, November.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the Beaufort Mcas weather station, 21.2 miles from downtown: 30-year averages, not a forecast.