Temperature
Warm by day, warm at night.
82°Ftypical September high
Typical range
September climate
September in Hilton Head Island
United States · North America
Warm days and plenty of sun. Humid air is the main drawback.
Some tradeoffs
Mid to late
Daytime high
82°F
Lows around 73°F
Rain
Several rainy days
Sun
10 h/day
Air feel
Very humid
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 13 wet days, more than in most months.
43%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
10.1 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
74%September Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 84° and nights feel near 77°.
Very coldColdCoolComfortableWarmHotNight hours
Clear sky
Partly cloudy skies this month.
48%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
9 mphSeptember Light breeze
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 82°F, easing to about 78°F in early evening.
Avg temp Typical range
Morning76°F
Feels 78°F
Rain25%
Cloud52%
Humid airHigh
Sun intensityLow
Best windowMidday81°F
Feels 83°F
Rain29%
Cloud53%
Humid airHigh
Sun intensityStrong
Late afternoon81°F
Feels 83°F
Rain29%
Cloud57%
Humid airHigh
Sun intensityModerate
Early evening78°F
Feels 81°F
Rain22%
Cloud57%
Humid airVery high
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 58 | 45 | 3.2 | 9 | 7.8 | 72 |
| Feb | 63 | 50 | 3.2 | 9 | 8.3 | 74 |
| Mar | 68 | 56 | 4.5 | 9 | 9.4 | 72 |
| Apr | 73 | 62 | 2.3 | 5 | 11.1 | 72 |
| May | 79 | 69 | 3.5 | 13 | 12.0 | 75 |
| Jun | 84 | 75 | 4.1 | 14 | 11.7 | 78 |
| Jul | 87 | 78 | 5.7 | 22 | 11.9 | 79 |
| Aug | 86 | 78 | 9.7 | 21 | 11.3 | 81 |
| Sep | 82 | 73 | 4.7 | 13 | 10.1 | 79 |
| Oct | 75 | 63 | 2.8 | 7 | 9.4 | 76 |
| Nov | 68 | 55 | 2.1 | 8 | 8.6 | 75 |
| Dec | 62 | 50 | 3.0 | 8 | 7.3 | 76 |
Similar climates
Similar
Similar climatePalermoItalySimilar climateTaorminaItalySimilar climateRomeItalySimilar climateSyracuseItaly
Want a side-by-side climate view? Compare Hilton Head Island with Palermo.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology