Temperature
Warm by day, warm at night.
80°Ftypical May high
Typical range
May climate
May in Key West
United States · North America
Warm days and plenty of sun. Humid air is the main drawback.
Good overall
Early to mid
Daytime high
80°F
Lows around 78°F
Rain
Several rainy days
Sun
12 h/day
Air feel
Humid
Sea temp
81°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 7 wet days this month.
23%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
12.2 hMay sunshine
Heat & humidity by month
Warm days, with humid periods.
85%May Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In May, afternoons feel about 81° and nights feel near 79°.
ComfortableWarmHotNight hours
Clear sky
Mostly clear skies this month.
63%May Clear sky
Clear skyCloud
Wind pattern
May's typical breeze keeps the air from feeling as stagnant.
12 mphMay Breezy
Sea temperature
81°FMay sea temp
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 79°F, and early evening stays near 80°F.
Avg temp Typical range
Morning78°F
Rain16%
Cloud40%
Humid airVery high
Sun intensityModerate
Midday79°F
Rain14%
Cloud36%
Humid airVery high
Sun intensityStrong
Late afternoon79°F
Rain8%
Cloud32%
Humid airVery high
Sun intensityStrong
Early evening79°F
Rain8%
Cloud33%
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