Annual average weather for Cayo Guillermo, Cuba

Search

Best
Best
Best
Best
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Sea
27°
Swim
Sea
27°
Swim
Sea
27°
Swim
Sea
27°
Swim
Sea
27°
Swim
Sea
29°
Swim
Sea
29°
Swim
Sea
29°
Swim
Sea
29°
Swim
Sea
29°
Swim
Sea
28°
Swim
Sea
27°
Swim

Annual Average Weather for Cayo Guillermo, Cuba

The annual average maximum daily temperature is 29.0°C (84.2°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 27.9°C (82.2°F) which is very warm and ideal for relaxing and swimming for the whole day. Annually there are on average 4.8 days of rain per month and 8.0 hours of sun per day.

When is the best time to visit Cayo Guillermo?

The best months to visit Cayo Guillermo are January, February, March, April, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The sea is best for swimming between June and November when the sea temperature is above the average 28°C (82°F) which is very warm and ideal for relaxing and swimming for the whole day.

Can you sunbathe in Cayo Guillermo year round?

Yes, you can sunbathe in Cayo Guillermo all year round.

The coolest month in Cayo Guillermo is January when the average maximum temperature is 26°C (79°F), average temperature is 23°C (73°F) and average minimum temperature is 20°C (68°F).

More info about the annual temperatures and sunshine.

Can you swim in Cayo Guillermo year round?

Yes, you can swim in Cayo Guillermo all year round.

The warmest sea water temperatures in Cayo Guillermo are found in September when they peak at 29°C (85°F) and lowest in March when they dip to 27°C (80°F).

The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures

When is the hottest month in Cayo Guillermo?

The hottest month in Cayo Guillermo is August when the average maximum temperature is very hot and perfect for sunbathing on clear days 32°C (89°F), average temperature is 28°C (83°F) and average minimum temperature is 25°C (77°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Cayo Guillermo?

The coolest month in Cayo Guillermo is January when the average maximum temperature is 26°C (79°F), average temperature is 23°C (73°F) and average minimum temperature is 20°C (68°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Cayo Guillermo?

The sunniest days in Cayo Guillermo are in April which has the most hours of sunshine per day. In April the sunshine percentage is 74% making it sunny and pleasant most of the time. The hours of sunshine per day are 9.3hrs making the days long and bright.

More info about the annual sunshine.

When is the least sunny month in Cayo Guillermo?

December has the least sunshine. In December the sunshine percentage is 59% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Cayo Guillermo?

The driest month in Cayo Guillermo is March with 4.5cm (1.8inches) of rain and January has the fewest days of rain with 1.7 days with some rain, an extremely dry time to visit the beach.

More info about the annual rainfall

When is the wettest month in Cayo Guillermo?

The wettest month in Cayo Guillermo is October with 17.5cm (6.9inches) of rain and June has the most days of rain with 7.4 days with some rain, a quite rainy time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Cayo Guillermo?

The coldest sea water temperatures in Cayo Guillermo are found in March when they dip to 27°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures.

When is the sea the warmest in Cayo Guillermo?

The warmest sea water temperatures in Cayo Guillermo are found in September when they peak at 29°C (85°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures.

When is the most humid month in Cayo Guillermo?

The most humid month in Cayo Guillermo is August with a dew point (an indicator of humidity) of 25°C (76°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

More info about the annual humidity.

When is the least humid month in Cayo Guillermo?

The least humid month in Cayo Guillermo is January with a dew point of 19°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

More info about the annual humidity.

When is the windiest month in Cayo Guillermo?

The most windy month in Cayo Guillermo is March when the average maximum windspeed is 30KM/H (19MPH) and the average wind speed is 17KM/H (10MPH).

More info about the annual wind conditions.

Annual Temperature for Cayo Guillermo

The hottest month in Cayo Guillermo is August when the average maximum temperature is 32°C (89°F), average temperature is 28°C (83°F) and average minimum temperature is 25°C (77°F).

The coolest month in Cayo Guillermo is January when the average maximum temperature is 26°C (26°F), average temperature is 23°C (73°F) and average minimum temperature is 20°C (68°F).

Annual Sunshine for Cayo Guillermo

The longest days in Cayo Guillermo are in June, with an average of 13.5 hours of daylight per day. December has the shortest days with an average of 10.8 hours of daylight per day.

The sunniest days in Cayo Guillermo are in April which has the most hours of sunshine per day. The sunshine percentage is 74% making it sunny and pleasant most of the time. The hours of sunshine per day are 9.3hrs making the days long and bright.

December has the least sunshine. The sunshine percentage is 59% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day.

The ultraviolet index is the highest in May when it reaches 12.7 and lowest in December when it reaches 6.2.

An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Cayo Guillermo

The warmest sea water temperatures in Cayo Guillermo are found in September when they peak at 29°C (85°F) and lowest in March when they dip to 27°C (80°F).

The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.

Annual Rainfall for Cayo Guillermo

The wettest month in Cayo Guillermo is October with 17.5cm (6.9inches) of rain and June has the most days of rain with 7.4 days with some rain, a quite rainy time to visit the beach.

The driest month in Cayo Guillermo is March with 4.5cm (1.8inches) of rain and January has the fewest days of rain with 1.7 days with some rain, an extremely dry time to visit the beach.

Annual Humidity for Cayo Guillermo

The most humid month in Cayo Guillermo is August with a dew point (an indicator of humidity) of 25°C (76°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

The least humid month in Cayo Guillermo is January with a dew point of 19°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

Annual Wind Speed for Cayo Guillermo

The most windy month in Cayo Guillermo is March when the average maximum windspeed is 30KM/H (19MPH) and the average wind speed is 17KM/H (10MPH).

The least windy month in Cayo Guillermo is October when the average maximum windspeed is 24KM/H (15MPH) and the average wind speed is 13KM/H (8MPH).

Best Beaches

PICK A MONTH FOR BEST BEACHES IN CUBA

Monthly Averages

Suggested Beaches

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

Booking.com Search FlightsImage

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.