‹ Hilton Head Island weather by month
Typical August weather
Hilton Head Island
South Carolina · August
90° days
74° nights
about 8 rainy days · 13½ hours of daylight · ocean 84°
What to pack
- Umbrella
- Swimsuit
- Sunscreen
What August feels like
August is the wettest stretch here, and the storms build over the mainland and shove out toward the island most afternoons. It is also the busy end of hurricane season on this coast, worth knowing when you are booking a week you can't move.
Rain arrives about 8 days of the month, so keep one flexible day in your plans. Full tropical humidity: mornings are your friend, and shade is currency. about 19 afternoons top 90°.
Can you swim?
The ocean runs about 84° — bath-warm.
The numbers
| Typical high | 90° |
|---|---|
| Typical low | 74° |
| Days with real rain | 8 |
| Total rain | 6.5 in |
| Humidity | tropical |
| Water temperature | 84° |
| Sunrise / sunset (mid-month) | 6:47 am / 8:07 pm |