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Early winter · Weather & things to do

Key Largo in December

Key Largo edges cooler than November, with highs of 76°F (24°C), lows of 72°F (22°C) and about 1.7 in (42 mm) of rain.

At 86/100 for comfort (6th of 12), it's one of the best months to visit.

Key Largo, Florida, United States
Avg high
76°F (24°C)
Avg low
72°F (22°C)
Rain
1.7 in (42 mm)
Humidity
78%
Cloud cover
53%
Daylight
~10 h 27 min
Comfort score
86/100 · Great

What December feels like

Days are warm, averaging 76°F (24°C).

Even at night it stays warm, around 72°F (22°C).

With 78% average humidity, it feels muggy.

About 1.7 in (42 mm) of rain falls in a typical year's December.

Key Largo: December compared with the months either side
NovemberDecemberJanuary
Avg high78°F26°C76°F24°C73°F23°C
Avg low75°F24°C72°F22°C68°F20°C
Rain2.2 in55 mm1.7 in42 mm1.3 in34 mm
Daylight10 h 45 min10 h 27 min10 h 36 min
Comfort898687

Plan around December

December is one of Key Largo's best months on the climate data.

What to pack for December

What to do in Key Largo in December

December is good outdoor weather here, so these picks lean toward the open air.

Nearby in December

NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.

Key Largo in December: quick answers

Is December a good time to visit Key Largo?

Yes. On the climate data it's one of the best months, scoring 86/100. Expect highs of 76°F (24°C) and 1.7 in (42 mm) of rain. December is inside the Dec – May window our Florida Keys Adventure route recommends.

How hot is Key Largo in December?

Average highs are 76°F (24°C) and average lows 72°F (22°C), making it the 3rd-coldest month by daytime highs.

Does it rain a lot in Key Largo in December?

Not much: about 1.7 in (42 mm) of rain falls across December on average, the 4th-driest month of the year. The annual total is about 48.7 in (1237 mm).

What should I pack for Key Largo in December?

Bring light, breathable clothes (highs average 76°F), quick-dry fabrics (78% average humidity) and comfortable walking shoes (most picks involve some walking).

Routes in season in December

Planning Key Largo in December?

Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.

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