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SunnyDays

South Carolina · CHS

Kiawah Island weather this week

Kiawah Island, South Carolina

Kiawah Island scores 4.2 out of 10 and has no genuinely clear day in the next 7. One of those days carries thunderstorms.

4.2/10
Wet, and no sun
<built-in method clear of dict object at 0x737ef213d5c0> genuinely clear days, 0 partly cloudy, 2 overcast, 4 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.

2 cloudy / 5 wet days, no clear days in 7 — Nature is in a mood — 1 stormy day — 98°F peaks

The next 7 days in Kiawah Island

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 (34%), not the lowest, because the worst number is the useful one.

Booking window Tue 11 Aug–Thu 13 Aug: 4.9/10 for those days alone. The 7-day outlook score (4.2) covers the full table below and includes days outside that window.

Kiawah Island daily forecast, Sun 9 Aug to Sat 15 Aug (7 days total). Best single day scores 6.4; worst scores 4.0. A lone good day cannot carry the week.
Day High Low Rain chance Sky Day score
87°F 76°F 21% Rain wet 5.0
Rain - expect to get wet
89°F 80°F 28% Heavy drizzle wet 5.4
Heavy drizzle - expect to get wet
97°F 77°F 17% Light drizzle wet 6.2
Light drizzle - expect to get wet
98°F 77°F 5% Drizzle cloudy 6.0
Cloudy and dry
97°F 77°F 5% Light drizzle cloudy 6.4
Cloudy and dry
95°F 77°F 24% Rain showers wet 6.1
Rain showers - expect to get wet
89°F 76°F 34% Thunderstorm storm 4.0
Storms - skip it

How this week got its score

  • 7 forecast days: 0 clear/mainly clear, 0 partly cloudy, 2 overcast, 4 wet (fog/drizzle/rain/showers), 1 stormy.
  • Trimmed mean of day scores 5.7 × 0.55 = 3.16
  • 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 0/7 = 0% coverage × 0.20 = 0.00
  • Best single day is 6.4 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 4.9 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 Kiawah Island

The nearest airport we price is CHS. From New York City that is about 1h 45m in the air out of EWR, 628 miles. Then about 31m to drive from CHS (est. 20 mi — road model, not real routing). Total door-to-lounger: 2h 16m. Flight times from 55 other departure metros are on the search page.

Where to stay in Kiawah Island

2 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?

Kiawah Island scores 4.2 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.

Kiawah Island 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.

Kiawah Island: clear-sky % by month, ERA5 2018–2025. n = days sampled.
Month Historically clear Sample (n)
January 1% n=248 all destinations →
February 6% n=226 all destinations →
March 14% n=248 all destinations →
April 41% n=240 all destinations →
May 38% n=248 all destinations →
June 22% n=240 all destinations →
July 7% n=248 all destinations →
August 10% n=248 all destinations →
September 33% n=240 all destinations →
October 46% n=248 all destinations →
November 14% n=240 all destinations →
December 4% n=248 all destinations →

Each month links to the detailed almanac page for Kiawah Island 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.