Cayo Guillermo weather in December 2025

Expect daytime maximum temperatures of 28°C in Cayo Guillermo, Cuba in December based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 28°C maximum daytime temperature in December in Cayo Guillermo28
    28°C max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in December in Cayo Guillermo7
    7 days with some rainfall
  • 18°C minimum night-time temperature in December in Cayo Guillermo18
    18°C min night temperature
  • 11 hours of daylight per day in December in Cayo Guillermo11
    11 hours of daylight per day
  • Moderate heat & humidity in December in Cayo GuillermoM
    Moderate heat & humidity
  • 39 mm monthly rainfall in December in Cayo Guillermo39
    39 mm of monthly rainfall
  • UV (maximum) index 6 (High) in December in Cayo Guillermo6
    6 (High) UV index
  • 26°C sea temperature in December in Cayo Guillermo26
    26°C sea temperature

More about Cayo Guillermo

Cayo Guillermo by month

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The December weather guide for Cuba (Cayo Guillermo) 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)

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More about Cuba

How hot is it in Cayo Guillermo in December?

Daytime temperatures usually reach 28°C in Cayo Guillermo in December with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Cayo Guillermo in December?

There are normally 7 hours of bright sunshine each day in Cayo Guillermo in December - that's 64% of daylight hours.

How warm is the sea around Cayo Guillermo in December?

The average sea temperature around Cayo Guillermo in December is 26°C.

Does it rain in Cayo Guillermo in December?

There are usually 7 days with some rain in Cayo Guillermo in December and the average monthly rainfall is 39mm.

Cayo Guillermo December sunrise & sunset times

Browse the sunrise and sunset times for Cayo Guillermo in December 2025. Select a month to view Cayo Guillermo sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:38 17:29
Tuesday, 16th December 2025 06:48 17:33
Wednesday, 31st December 2025 06:55 17:41

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