Hilton Head Island Climate by Month
Hilton Head Island, South Carolina, United States
Hot summers and cool winters, with rain spread through the year.
Hot summers and cool winters, with rain spread through the year: that's Hilton Head Island's climate in short. July is the warmest month, with highs around 91°F (33°C); January is the coolest at 60°F (15°C), and nights dip to 40°F (5°C). It gets 50 in (1264 mm) of rain a year, spread across the months.
- Warmest month
- 91°F(33°C)
- Average high, July
- Coldest nights
- 40°F(5°C)
- Average low, January
- Rain per year
- 50 in(1264 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: May
Best and worst months in Hilton Head Island
Best for weatherThe most comfortable weather comes in April, with highs around 76°F (24°C) and about 3.4 in (86 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the wettest, with 7.7 in (196 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hilton Head Island weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 60°F(15°C) | 40°F(5°C) | 3.4 in(87 mm) | 74% | 2.7 |
| FebFebruary | 63°F(17°C) | 42°F(5°C) | 3.0 in(75 mm) | 75% | 3.4 |
| MarMarch | 69°F(21°C) | 48°F(9°C) | 3.3 in(84 mm) | 71% | 4.6 |
| AprAprilBest | 76°F(24°C) | 55°F(13°C) | 3.4 in(86 mm) | 70% | 5.7 |
| MayMay | 83°F(28°C) | 63°F(17°C) | 3.1 in(78 mm) | 72% | 6.5 |
| JunJune | 87°F(31°C) | 70°F(21°C) | 5.8 in(147 mm) | 75% | 6.1 |
| JulJuly | 91°F(33°C) | 73°F(23°C) | 5.9 in(150 mm) | 76% | 6.4 |
| AugAugust | 89°F(32°C) | 73°F(23°C) | 7.7 in(196 mm) | 78% | 5.6 |
| SepSeptember | 85°F(30°C) | 69°F(21°C) | 5.4 in(136 mm) | 75% | 4.6 |
| OctOctober | 78°F(26°C) | 59°F(15°C) | 3.4 in(87 mm) | 75% | 3.8 |
| NovNovember | 69°F(21°C) | 49°F(9°C) | 2.3 in(58 mm) | 76% | 3.1 |
| DecDecember | 63°F(17°C) | 43°F(6°C) | 3.1 in(80 mm) | 73% | 2.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate outside the United States
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