Duck Key weather in December 2026

Q: How hot is it in Duck Key in December?

Daytime temperatures usually reach 24°C in Duck Key in December, falling to 17°C at night.

Q: How sunny is it in Duck Key in December?

There are normally 7 hours of bright sunshine each day in Duck Key in December - that's 66% of daylight hours.

Q: How warm is the sea around Duck Key in December?

The average sea temperature around Duck Key in December is 25°C.

Q: Does it rain in Duck Key in December?

There are usually 6 days with some rain in Duck Key in December and the average monthly rainfall is 43mm.

Expect daytime maximum temperatures of 25°C in Duck Key, Florida in December based on long-term weather averages. There are 7 hours of sunshine per day on average.

25
25°C max day temperature
7
7 hours of sunshine per day
6
6 days with some rainfall
15
15°C min night temperature
11
11 hours of daylight per day
L
Low heat & humidity
37
37 mm of monthly rainfall
6
6 (High) UV index
24
24°C sea temperature

More about Duck Key

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The December weather guide for Florida (Duck Key) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)