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SunnyDays

South Carolina · SAV

Hilton Head weather this week

Hilton Head, South Carolina

Hilton Head scores 4.5 out of 10 and has no genuinely clear day in the next 7. One of those days carries thunderstorms.

4.5/10
No clear day
<built-in method clear of dict object at 0x7ce263557a80> genuinely clear days, 0 partly cloudy, 4 overcast, 2 wet, 1 stormy — out of 7 forecast days.
Bright days 0 vs dull days 7. Dull wins, so we do not call this a good week.
We are not showing a flattering tier word here. Why the score and the sky can disagree.

4 cloudy / 3 wet days, no clear days in 7 — Nature is in a mood — 1 stormy day and 102°F heat

The next 7 days in Hilton Head

Every number below is the forecast we hold, rendered as text — nothing here is drawn on a canvas or filled in by JavaScript. The rain figure is the highest chance across all 7 days (35%), not the lowest, because the worst number is the useful one.

Booking window Tue 11 Aug–Thu 13 Aug: 4.6/10 for those days alone. The 7-day outlook score (4.5) covers the full table below and includes days outside that window.

Hilton Head daily forecast, Sun 9 Aug to Sat 15 Aug (7 days total). Best single day scores 8.1; worst scores 4.0. A lone good day cannot carry the week.
Day High Low Rain chance Sky Day score
86°F 73°F 21% Overcast cloudy 8.1
Cloudy with rain risk
92°F 77°F 17% Thunderstorm storm 4.0
Storms - skip it
102°F 74°F 18% Overcast cloudy 6.1
Cloudy and dry
100°F 75°F 9% Rain showers cloudy 5.6
Cloudy and dry
99°F 74°F 7% Light drizzle cloudy 6.0
Cloudy and dry
98°F 75°F 27% Rain showers wet 5.5
Rain showers - expect to get wet
95°F 73°F 35% Drizzle wet 5.6
Drizzle - expect to get wet

How this week got its score

  • 7 forecast days: 0 clear/mainly clear, 0 partly cloudy, 4 overcast, 2 wet (fog/drizzle/rain/showers), 1 stormy.
  • Trimmed mean of day scores 5.8 × 0.55 = 3.17
  • Worst day drag: worst day is 4.0 × 0.25 = 1.00 - one bad day cannot be averaged away.
  • Longest consecutive run of good days (≥7.0) is 1/7 = 14% coverage × 0.20 = 0.29
  • Best single day is 8.1 but it only counts through the trimmed mean - a lone great day cannot carry the window.
  • Advertised 3-day window (2026-08-11→2026-08-13) scores 4.6 on its own.
  • Legacy gate counted 3/7 days as "perfect sun"; this model counts 0 genuinely clear.

The full model, including why a single great day cannot rescue a bad week, is on the methodology page.

Getting to Hilton Head

The nearest airport we price is SAV. From New York City that is about 1h 55m in the air out of EWR, 708 miles. Flight times from 55 other departure metros are on the search page.

Where to stay in Hilton Head

3 properties we currently hold live rates for, in supplier order. The nightly rate shown is what the supplier returned at the last refresh for the window above — it is a held rate, not a quote, and it moves.

So, should you go?

Hilton Head scores 4.5 out of 10 and has no genuinely clear day in the next 7. One of those days carries thunderstorms. There is some sun in this window, but not much. Compare it against the rest of the list before booking.

Hilton Head by month — 8-year ERA5 history

Historical clear-sky percentages from the ERA5 reanalysis (2018–2025). This is history, not a forecast — the 7-day forecast above is this week. They can and do differ.

Hilton Head: clear-sky % by month, ERA5 2018–2025. n = days sampled.
Month Historically clear Sample (n)
January 0% n=248 all destinations →
February 10% n=226 all destinations →
March 19% n=248 all destinations →
April 38% n=240 all destinations →
May 39% n=248 all destinations →
June 20% n=240 all destinations →
July 15% n=248 all destinations →
August 9% n=248 all destinations →
September 33% n=240 all destinations →
October 45% n=248 all destinations →
November 12% n=240 all destinations →
December 6% n=248 all destinations →

Each month links to the detailed almanac page for Hilton Head in that month. The “all destinations” column links to the full ranking across all destinations for that month.

Forecast data from Open-Meteo, last refreshed 2026-08-09T05:01:05.311896Z. Hotel names and rates come from LiteAPI and change constantly; the rate shown is the rate we held at refresh time, not a quote. Scores are forecasts, not guarantees, and the whole model is published on our methodology page.