Cayo Guillermo weather in May 2025

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Cayo Guillermo in May. Check more long-term weather averages for Cayo Guillermo in May before you book your next holiday to Cuba in 2025/2026.

  • 31°C maximum daytime temperature in May in Cayo Guillermo31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in May in Cayo Guillermo12
    12 days with some rainfall
  • 21°C minimum night-time temperature in May in Cayo Guillermo21
    21°C min night temperature
  • 13 hours of daylight per day in May in Cayo Guillermo13
    13 hours of daylight per day
  • High heat & humidity in May in Cayo GuillermoH
    High heat & humidity
  • 168 mm monthly rainfall in May in Cayo Guillermo168
    168 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Cayo Guillermo11
    11+ (Extreme) UV index
  • 27°C sea temperature in May in Cayo Guillermo27
    27°C sea temperature

More about Cayo Guillermo

Cayo Guillermo by month

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The May 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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How hot is it in Cayo Guillermo in May?

Daytime temperatures usually reach 31°C in Cayo Guillermo in May with high heat and humidity, falling to 21°C at night.

How sunny is it in Cayo Guillermo in May?

There are normally 8 hours of bright sunshine each day in Cayo Guillermo in May - that's 58% of daylight hours.

How warm is the sea around Cayo Guillermo in May?

The average sea temperature around Cayo Guillermo in May is 27°C.

Does it rain in Cayo Guillermo in May?

There are usually 12 days with some rain in Cayo Guillermo in May and the average monthly rainfall is 168mm.

Cayo Guillermo May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:42 18:42
Friday, 16th May 2025 05:34 18:48
Saturday, 31st May 2025 05:30 18:55

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