Key Largo Climate and Average Weather
Climate of Key Largo: average temperatures, rainfall and seasons month by month.
Climate in Key Largo month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 72° | 66° | 1,6 in | ★★★★☆ |
| February | 72° | 67° | 1,6 in | ★★★★☆ |
| March | 76° | 72° | 3,3 in | ★★★★☆ |
| April | 78° | 74° | 1,3 in | ★★★★★ |
| May | 83° | 79° | 2,7 in | ★★★★☆ |
| June | 85° | 81° | 6,5 in | ★★★☆☆ |
| July | 86° | 82° | 3,5 in | ★★★★☆ |
| August | 87° | 82° | 4,6 in | ★★★☆☆ |
| September | 85° | 81° | 5,9 in | ★★★☆☆ |
| October | 82° | 78° | 5,5 in | ★★★☆☆ |
| November | 79° | 74° | 1,9 in | ★★★★☆ |
| December | 75° | 70° | 3,7 in | ★★★★☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Key Largo
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Key Largo compares with nearby places
Annual averages, and the difference against Key Largo.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Biscayne National Park | 31 mi | 77°F | 33°F cooler | 56 in |
| Everglades (UNESCO World Heritage Site) | 31 mi | 76°F | 34°F cooler | 52 in |
| Everglades National Park | 31 mi | 76°F | 34°F cooler | 52 in |
| Miami | 49 mi | 77°F | 33°F cooler | 58 in |
| Miami-Dade County | 49 mi | 77°F | 33°F cooler | 58 in |
Best time to visit Key Largo
Go in January, February, April, May and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: June, September and October - expect the least comfortable mix of heat, cold or rain.
What this means for Key Largo
Today is slightly warmer than average for August. The forecast high of 91°F is 4°F above the 87°F typical for this month.
A 14% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 47°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid June, September and October - historically the least comfortable months here.
Summary
Key Largo is an island in Florida. Key Largo is an island known for diving on the Florida Reef.
Right now it is 82°F (28°C) in Key Largo with overcast. It feels like 90°F. Today runs from 81°F to 91°F. Chance of precipitation is 14%. Sightseeing conditions score 9/10 - excellent - go now.
The best time to visit Key Largo is January, February, April, May and November. The climate is temperate. June, September and October tend to be the least comfortable months. August is the warmest month with average highs near 87°F, while January is the coldest with lows near 66°F.
The closest major airport is Miami International Airport (MIA), about 50 mi away. Nearby highlights include Biscayne National Park, Everglades (UNESCO World Heritage Site), Everglades National Park and South Beach.
In plain terms. Today is slightly warmer than average for August. The forecast high of 91°F is 4°F above the 87°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. family time is the strongest bet in Key Largo today at 9.4/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Key Largo
| Type | Island |
|---|---|
| State | Florida |
| Country | United States |
| Continent | North America |
| Coordinates | 25°5′11.4″N 80°26′50.3″W (25.0865, -80.4473) |
| Known for | diving on the Florida Reef |
| Local time | 11:03 AM (UTC-04:00) |
| Best months | January, February, April, May and November |
| Climate | Temperate |
Weather map for Key Largo
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Key Largo
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Key Largo?
Key Largo is an island in Florida. Its coordinates are 25.0865, -80.4473. It lies in North America.
What is the weather like in Key Largo right now?
It is currently 82°F (28°C) with overcast. Humidity is 74% and wind is 5 mph.
When is the best time to visit Key Largo?
January, February, April, May and November offer the most comfortable conditions in Key Largo, which has a temperate climate. June, September and October are usually the hardest months for outdoor plans.
What time zone is Key Largo in?
Key Largo observes America/New_York (UTC-04:00). The local time is 11:03 AM.
What is the nearest airport to Key Largo?
The closest airports are Miami International Airport (MIA), 50 mi away and Orlando International Airport (MCO), 237 mi away.
What are the top things to do in Key Largo?
Popular options include Biscayne National Park, Everglades (UNESCO World Heritage Site), Everglades National Park, South Beach, Dry Tortugas National Park and Myakka River State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 11:03 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
