SeasonMapHilton Head Island weather by month
United States
The best time to visit Hilton Head Island is April, May and October — 87/100 in May, 28°C and 7 rainy days. The best season is spring, March to May (83/100 on average).
The worst month is December at 59/100 — nice, rainy, clean air. See December →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit United States →
Hilton Head Island, month by month
Comfort score out of 100 for the kind of trip Hilton Head Island is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 63 | C | 15°C | 7 d | 8 h | Busy | — |
| FebFebruary | 67 | C | 19°C | 7 d | 8 h | Quiet | — |
| MarMarch | 75 | B | 21°C | 7 d | 9 h | Busy | — |
| AprApril | 86 | A | 24°C | 6 d | 11 h | Busy | 1 |
| MayMay | 87 | A | 28°C | 7 d | 11 h | Busy | 2 |
| JunJune | 83 | A | 31°C | 10 d | 12 h | Peak | 5 |
| JulJuly | 77 | B | 32°C | 11 d | 12 h | Peak | 5 |
| AugAugust | 76 | B | 31°C | 13 d | 11 h | Peak | 5 |
| SepSeptember | 84 | A | 29°C | 7 d | 10 h | Busy | 4 |
| OctOctober | 85 | A | 26°C | 5 d | 9 h | Busy | 4 |
| NovNovember | 72 | B | 21°C | 6 d | 8 h | Busy | 1 |
| DecDecember | 59 | D | 17°C | 8 d | 7 h | Busy | — |
What's on in Hilton Head Island through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Hilton Head Island in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Busyone of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet