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SunnyDays

Florida · EYW

Key West weather this week

Key West, Florida

Key West scores 6.8 out of 10 and has exactly one genuinely clear day in the next 7. One of those days carries thunderstorms. Dull days (6) still outnumber bright ones (1), so this is not a good week.

6.8/10
Mostly dull
<built-in method clear of dict object at 0x7ce2616e8080> genuinely clear days, 0 partly cloudy, 4 overcast, 1 wet, 1 stormy — out of 7 forecast days.
Bright days 1 vs dull days 6. 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.

1 clear of 7 days · best run 6 days — Nature is in a mood — 1 stormy day in the window

The next 7 days in Key West

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 (22%), not the lowest, because the worst number is the useful one.

Booking window Sun 9 Aug–Tue 11 Aug: 7.8/10 for those days alone. The 7-day outlook score (6.8) covers the full table below and includes days outside that window.

Key West daily forecast, Sun 9 Aug to Sat 15 Aug (7 days total). Best single day scores 9.4; worst scores 4.0. A lone good day cannot carry the week.
Day High Low Rain chance Sky Day score
89°F 78°F 16% Light drizzle wet 7.0
Light drizzle - expect to get wet
92°F 82°F 13% Overcast cloudy 7.9
Cloudy and dry
86°F 85°F 3% Light drizzle cloudy 7.0
Cloudy but warm & dry
86°F 85°F 3% Overcast cloudy 8.5
Cloudy but warm & dry
88°F 85°F 3% Light drizzle cloudy 7.0
Cloudy but warm & dry
86°F 85°F 22% Mainly clear clear 9.4
Clear and perfect
86°F 85°F 22% Thunderstorm storm 4.0
Storms - skip it

How this week got its score

  • 7 forecast days: 1 clear/mainly clear, 0 partly cloudy, 4 overcast, 1 wet (fog/drizzle/rain/showers), 1 stormy.
  • Trimmed mean of day scores 7.5 × 0.55 = 4.11
  • 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 6/7 = 86% coverage × 0.20 = 1.71
  • Best single day is 9.4 but it only counts through the trimmed mean - a lone great day cannot carry the window.
  • Advertised 3-day window (2026-08-09→2026-08-11) scores 7.8 on its own.
  • Legacy gate counted 5/7 days as "perfect sun"; this model counts 1 genuinely clear.

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

Getting to Key West

The nearest airport we price is EYW. From New York City that is about 2h 54m in the air out of JFK, 1203 miles. Flight times from 55 other departure metros are on the search page.

Where to stay in Key West

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?

Key West scores 6.8 out of 10 and has exactly one genuinely clear day in the next 7. One of those days carries thunderstorms. Dull days (6) still outnumber bright ones (1), so this is not a good week. There is some sun in this window, but not much. Compare it against the rest of the list before booking.

Key West 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.

Key West: clear-sky % by month, ERA5 2018–2025. n = days sampled.
Month Historically clear Sample (n)
January 27% n=248 all destinations →
February 37% n=226 all destinations →
March 45% n=248 all destinations →
April 44% n=240 all destinations →
May 33% n=248 all destinations →
June 14% n=240 all destinations →
July 17% n=248 all destinations →
August 13% n=248 all destinations →
September 11% n=240 all destinations →
October 13% n=248 all destinations →
November 30% n=240 all destinations →
December 41% n=248 all destinations →

Each month links to the detailed almanac page for Key West 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.