Key West weather in December 2021

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  • 24°C maximum daytime temperature in December in Key West24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in December in Key West6
    6 days with some rainfall
  • 18°C minimum night-time temperature in December in Key West18
    18°C min night temperature
  • 11 hours of daylight per day in December in Key West11
    11 hours of daylight per day
  • Low heat & humidity in December in Key WestL
    Low heat & humidity
  • 45 mm monthly rainfall in December in Key West45
    45 mm of monthly rainfall
  • UV (maximum) index 6 (High) in December in Key West6
    6 (High) UV index
  • 24°C sea temperature in December in Key West24
    24°C sea temperature

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The December weather guide for Key West, Florida 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.

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How hot is it in Key West in December?

Daytime temperatures usually reach 24°C in Key West in December, falling to 18°C at night.

How sunny is it in Key West in December?

There are normally 7 hours of bright sunshine each day in Key West in December - that's 70% of daylight hours.

How warm is the sea around Key West in December?

The average sea temperature around Key West in December is 24°C.

Does it rain in Key West in December?

There are usually 6 days with some rain in Key West in December and the average monthly rainfall is 45mm.

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

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Key West sunrise & sunset times for December 2021

Browse the sunrise & sunset times for Key West in December 2021. Select a month to view Key West sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 06:55 17:38
Thursday, 16th December 2021 07:04 17:42
Friday, 31st December 2021 07:11 17:50
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Where is hot in Florida in December for 2021/2022?

Below are average maximum temperatures at popular destinations in Florida in December. Select a destination to see more weather parameters.

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