Key West climate
Warm weather is consistent, while rain, humidity, heat, and hurricanes shape the year
NOAA and the National Weather Service report 1991 to 2020 Key West normals of 83.7 degrees Fahrenheit for average daily maximum temperature, 78.9 degrees for average temperature, 74.0 degrees for average minimum temperature, and 40.44 inches of annual precipitation. January normals are 74.7 degrees high and 62.9 degrees low with 2.01 inches of rain. July is 89.8 high and 77.8 low with 4.48 inches, while September averages 8.24 inches of rain.
The catalog lists 74 percent humidity and a warm climate band. Heat, lightning, heavy rain, salt, mold, cooling costs, and hurricane preparation affect ordinary errands as well as recreation. Pair beaches, parks, history, library visits, transit, and meals with hydration, shade, indoor alternatives, power planning, insurance, evacuation destinations, and a route home for the months when conditions are least forgiving.
Living through the seasons
Summer and winter comfort tell a similar story.
- Overall Comfort
- Very Good
3.7 / 5
- Average Summer High
- 86°F
- Days Above 90°F
- 0 days/year
- Summer Feel
- Excellent
Warm · 86°F
Excellent
4.8 / 5
- Average Winter Low
- 73°F / 23°C
- Days Below Freezing
- 0 days/year
- Winter Feel
- Excellent
Fair
Excellent
4.7 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 78%
- Comfortable Months
- 4 months
- Solar Exposure
- 1999 peak sun hrs/yr
Good
Poor
Good
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.7 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 6.2 µg/m³ 2021-2025 modeled average
- Best Months
- Jan, Feb, Mar, Dec
- Toughest Months
- Sep, Aug, Jul
- Heat Risk
- Low
- Weather Volatility
- Strong
Good · 6.2 µg/m³ 2021-2025 modeled average
Very Good
4 / 5
Key West in everyday life
Could Key West work for you?
What may work well
- National Weather Service climate information makes Key West temperatures, rainfall, seasonality, and hurricane exposure visible for home planning.
- Mild winters, beaches, parks, transit, library services, hospital care, and indoor choices can support the year beyond peak outdoor season.
What to think about
- Heat, humidity, heavy rain, thunderstorms, hurricanes, power interruptions, flooding, salt, traffic, and road conditions can affect outdoor and care access.
- Cooling, shutters, roof, drainage, mold control, water, power, insurance, evacuation, and car upkeep deserve an address level review.
Choose Key West for the whole year
Inspect comfort systems
Review cooling, insulation, windows, shade, roof, shutters, drainage, mold control, power, water, utilities, and indoor air.
Plan around tropical seasons
Pair beaches, parks, meals, errands, care, and family visits with hydration, shade, lightning, heavy rain, hurricane alerts, traffic, and indoor alternatives.
Price storm upkeep
Ask about cooling, roof, shutters, salt, drainage, mold, storm repairs, power, water, insurance, vehicle service, evacuation, and the route to care.
Questions retirees ask
What is the climate like in Key West?
The National Weather Service reports warm temperatures through the year, about 40.44 inches of annual precipitation, and a wetter period that includes late summer and early fall. Check heat, humidity, storms, cooling, flood exposure, and hurricane planning for the exact home.
When is hurricane season in Key West?
The Atlantic hurricane season runs from June 1 through November 30. Keep evacuation destinations, fuel, water, medicines, documents, reentry information, power plans, insurance, and the route to care ready before a storm threatens.
Key West can suit someone who welcomes warm island weather and an outdoor week, provided the home handles heat, humidity, heavy rain, hurricanes, flooding, mold, power, water, insurance, and safe travel throughout the year.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk
- Open-Meteo / Copernicus CAMS
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- NOAA IBTrACS
Used for Weather Volatility
Not yet available for this place: Drought Risk.
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Partner with Retirement ListsResearch and writing byGrant Gibson
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