Temperature
Pleasant by day, warm at night.
75°Ftypical December high
Typical range
December climate
December in Key West
United States · North America
Warm coastal days and plenty of sun.
Excellent time to visit
Mid to late
Daytime high
75°F
Lows around 72°F
Rain
A few rainy days
Sun
9.5 h/day
Air feel
Humid
Sea temp
78°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
A few rainy days, mostly brief and on-and-off. About 5 wet days, fewer than in most months.
16%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
9.6 hDecember sunshine
Heat & humidity by month
Humidity is noticeable this month.
64%December Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In December, afternoons feel about 71° and nights feel near 70°.
ComfortableWarmHotNight hours
Clear sky
Partly cloudy skies this month.
56%December Clear sky
Clear skyCloud
Wind pattern
December's typical breeze keeps the air from feeling as stagnant.
14 mphDecember Breezy
Sea temperature
78°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December stays around 73°F through the day and night.
Avg temp Typical range
Morning73°F
Rain12%
Cloud46%
Humid airHigh
Sun intensityLow
Midday73°F
Rain10%
Cloud42%
Humid airHigh
Sun intensityStrong
Late afternoon73°F
Rain8%
Cloud40%
Humid airHigh
Sun intensityLow
Best windowEarly evening74°F
Rain8%
Cloud41%
Humid airHigh
Sun intensityMinimal
Data 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