‹ Hilton Head Island weather by month
Typical May weather
Hilton Head Island
South Carolina · May
84° days
64° nights
about 5 rainy days · 14 hours of daylight · ocean 75°
What to pack
- Swimsuit
- Sunscreen
What May feels like
May is the driest month of the year here. It is also when the loggerheads start coming ashore at night to nest, which is why the oceanfront lights get shielded from now until autumn and why nobody leaves a beach chair out overnight.
Expect about 5 days with real rain — enough to notice, not enough to plan around. There’s a little humidity in the air, but nothing that changes your plans. about 6 afternoons top 90°.
Can you swim?
The ocean runs about 75° — comfortable for swimming.
The numbers
| Typical high | 84° |
|---|---|
| Typical low | 64° |
| Days with real rain | 5 |
| Total rain | 2.5 in |
| Humidity | a touch humid |
| Water temperature | 75° |
| Sunrise / sunset (mid-month) | 6:24 am / 8:13 pm |