Key Largo climate
Tropical maritime weather brings mild winters, humid heat, wet summers, and hurricane exposure
The National Weather Service describes the Florida Keys as tropical maritime, with mild winters and limited seasonal temperature variation. Its 1991 to 2020 normals report annual average maximum temperatures of 83.7 degrees Fahrenheit in Key West and 84.5 degrees in Marathon, with about 40 inches of annual rainfall. December through April is generally drier, while June through October brings about 65 percent of annual rainfall and frequent showers and thunderstorms. The catalog lists 70 percent humidity and a warm climate band.
Key Largo does not have an exact long term station summary in the cited National Weather Service overview, so the Key West and Marathon figures describe the broader Keys climate rather than a precise home forecast. Inspect cooling, shade, roof, shutters, windows, drainage, mold control, power, water, salt exposure, insurance, and indoor choices for storm days. Pair reef, hammock, library, errands, and care with hydration, lightning, heavy rain, and hurricane preparation.
Living through the seasons
Summer and winter comfort tell a similar story.
- Overall Comfort
- Very Good
3.9 / 5
- Average Summer High
- 86°F
- Days Above 90°F
- 1 day/year
- Summer Feel
- Excellent
Warm · 86°F
Excellent
4.8 / 5
- Average Winter Low
- 71°F / 22°C
- Days Below Freezing
- 0 days/year
- Winter Feel
- Excellent
Very Good
Excellent
4.7 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 76%
- Comfortable Months
- 5 months
- Solar Exposure
- 1851 peak sun hrs/yr
Good
Fair
Fair
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
- 5.3 µg/m³ 2021-2025 modeled average
- Best Months
- Jan, Feb, Mar, Nov, Dec
- Toughest Months
- Sep, Jul, Aug
- Heat Risk
- Low
- Drought Risk
- Low - Medium (0.2-0.4)
- Weather Volatility
- Strong
Good · 5.3 µg/m³ 2021-2025 modeled average
Very Good
4 / 5
Key Largo in everyday life
Could Key Largo work for you?
What may work well
- National Weather Service climate information makes the broader Keys temperature, rainfall, seasonality, and hurricane exposure visible for home planning.
- Mild winters, water access, parks, library services, hospital care, and indoor choices can support the year beyond peak summer recreation.
What to think about
- Heat, humidity, frequent summer showers, thunderstorms, hurricanes, power interruptions, flooding, salt, 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 Largo for the whole year
Inspect comfort systems
Review cooling, insulation, windows, shade, roof, shutters, drainage, mold control, power, water, wastewater, humidity, and indoor air.
Plan around tropical seasons
Pair reefs, parks, meals, errands, care, and family visits with hydration, shade, lightning, heavy rain, hurricane alerts, 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 Largo?
The National Weather Service describes the Florida Keys as tropical maritime, with mild winters, limited seasonal temperature variation, about 40 inches of annual rainfall, and a wetter period from June through October. Check heat, humidity, storms, cooling, flood exposure, and hurricane planning for the exact home.
When is hurricane season in Key Largo?
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 Largo can suit someone who welcomes tropical maritime weather and a water oriented week, provided the home handles humidity, heat, 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
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
- NOAA IBTrACS
Used for Weather Volatility
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Partner with Retirement ListsResearch and writing byGrant Gibson
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