Temperature
Hot by day, warm at night.
85°Ftypical August high
Typical range
August climate
August in Key West
United States · North America
Hot days and some sun. Hurricane risk near peak and humid air are the main drawbacks.
Some tradeoffs
Daytime high
85°F
Lows around 82°F
Rain
Rainy spells
Sun
12 h/day
Air feel
Very humid
Sea temp
86°F
Very warm sea
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent, but usually comes in brief, on-and-off spells. About 16 wet days, more than in most months.
52%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
11.9 hAugust sunshine
Heat & humidity by month
Very humid air is a major factor this month.
73%August Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In August, afternoons feel about 89° and nights feel near 87°.
ComfortableWarmHotNight hours
Clear sky
Mostly cloudy skies this month.
39%August Clear sky
Clear skyCloud
Wind pattern
August's typical breeze keeps the air from feeling as stagnant.
10 mphAugust Breezy
Sea temperature
86°FAugust sea temp
More detailIncludes daypart comfort
Typical August day
August stays around 83°F through the day and night, with little temperature relief.
Avg temp Typical range
Morning83°F
Feels 88°F
Rain28%
Cloud63%
Humid airVery high
Sun intensityLow
Midday83°F
Feels 89°F
Rain27%
Cloud59%
Humid airVery high
Sun intensityStrong
Late afternoon83°F
Feels 89°F
Rain19%
Cloud55%
Humid airVery high
Sun intensityStrong
Early evening84°F
Feels 89°F
Rain17%
Cloud60%
Humid airVery high
Sun intensityLow
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 73 | 69 | 1.3 | 5 | 9.7 | 76 | 76 |
| Feb | 73 | 70 | 1.2 | 4 | 10.3 | 78 | 76 |
| Mar | 75 | 72 | 1.0 | 4 | 10.9 | 75 | 77 |
| Apr | 77 | 75 | 1.3 | 4 | 12.1 | 75 | 79 |
| May | 80 | 78 | 2.5 | 7 | 12.2 | 77 | 81 |
| Jun | 83 | 80 | 4.2 | 13 | 11.7 | 80 | 84 |
| Jul | 84 | 82 | 2.7 | 13 | 12.4 | 78 | 85 |
| Aug | 85 | 82 | 4.2 | 16 | 11.9 | 78 | 86 |
| Sep | 84 | 81 | 5.3 | 17 | 10.6 | 79 | 86 |
| Oct | 81 | 79 | 4.3 | 13 | 10.0 | 77 | 84 |
| Nov | 78 | 75 | 1.6 | 6 | 9.8 | 75 | 81 |
| Dec | 75 | 72 | 1.4 | 5 | 9.6 | 77 | 78 |
Similar climates
Similar
Similar travel styleBaliIndonesiaSimilar travel stylePunta de MitaMexicoSimilar travel styleNassauBahamasSimilar travel stylePalm BeachUnited States
Want a side-by-side climate view? Compare Key West with Bali.
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: Jun 4, 2026
Data & methodology