‹ Hilton Head Island weather by month
Typical December weather
Hilton Head Island
South Carolina · December
63° days
43° nights
about 5 rainy days · 10 hours of daylight · ocean 58°
What to pack
- Sweater
What December feels like
Golf never really stops here; the courses just get cooler and emptier. Sea Pines strings lights through Harbour Town for a low-key island Christmas, and on the handful of nights that drop below freezing everybody covers their plants.
Expect about 5 days with real rain — enough to notice, not enough to plan around. The air runs dry — whatever the thermometer says, it wears easy.
Can you swim?
The ocean runs about 58° — cold — a quick dip takes resolve.
The numbers
| Typical high | 63° |
|---|---|
| Typical low | 43° |
| Days with real rain | 5 |
| Total rain | 3.2 in |
| Humidity | dry air |
| Water temperature | 58° |
| Sunrise / sunset (mid-month) | 7:16 am / 5:19 pm |