Temperature
Hot by day, warm at night.
89°Ftypical Aug high
Key West
United States · North America
Key West is most comfortable in the drier months around January to March. Typical daytime highs run about 79-89°F year-round. The climate is hot and humid. Rainy season runs roughly May to October.
Best time to go
12 mo · Typical year
Temperature range
64°F to 89°F
Rain
10 days/mo
Sunshine
10.9 h/day
Humidity feel
Humid year-round
When to visit
Month-by-month fit
Precipitation
One of the wettest months.
52%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
11.9 hAug sunshine
Heat & humidity by month
Warm days, with some hot afternoons and occasional humid spells.
Very humidAug heat feel
Air-feel chart data is unavailable for this destination. Use the selected-month dew point, temperature, rain, and sunshine context together rather than treating any one metric as total comfort.
Sea temperature
87°Aug sea temp
More detailIncludes sky and daypart comfort
Cloud cover
Partly cloudy across the month.
41%Aug clear sky
ClearCloud cover
Similar
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Want a side-by-side climate view? Compare Key West with Denpasar / 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.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 4, 2026
Data & methodology