Cayo Guillermo weather in May 2025

Expect 88°F 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.

  • 88°F maximum daytime temperature in May in Cayo Guillermo88
    88°F max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in May in Cayo Guillermo12
    12 days with some rainfall
  • 70°F minimum night-time temperature in May in Cayo Guillermo70
    70°F 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
  • 6.6 inches monthly rainfall in May in Cayo Guillermo6.6
    6.6 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Cayo Guillermo11
    11+ (Extreme) UV index
  • 81°F sea temperature in May in Cayo Guillermo81
    81°F sea temperature

More about Cayo Guillermo

Cayo Guillermo by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Cuba

Marella Cruises: up to 5% off ocean cruises

  • Book online & save up to 5% on Marella Cruises
  • Discount varies by season. Book online with TUI
  • Destinations across the Med, Caribbean & USA
Go to Marella Cruises deal >>

View all Marella Cruises offers

Marella CruisesCruise deal finder

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)  |  Imperial (°F)

Back to top

More about Cuba

How hot is it in Cayo Guillermo in May?

Daytime temperatures usually reach 88°F in Cayo Guillermo in May with high heat and humidity, falling to 70°F 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 81°F.

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 6.6 inches.

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^