Cayo Guillermo
Cuba
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Cayo Guillermo, Cuba

April in Cayo Guillermo, Cuba, is a hot spring month, with average temperature varying between 31°C (87.8°F) and 19°C (66.2°F).
The ideal sea water temperature of 26°C (78.8°F) and only 5 rainfall days, with 60mm (2.4") of accumulated rainfall, make April the best time for swimming and other water activities.

Temperature

In Cayo Guillermo, Cuba, the average high-temperature is practically the same as in March - a tropical 31°C (87.8°F). The average low-temperature, in April, is 19°C (66.2°F).

Rainfall

In Cayo Guillermo, during April, the rain falls for 5 days and regularly aggregates up to 60mm (2.4") of precipitation. Throughout the year, there are 125 rainfall days, and 1200mm (47.2") of precipitation is accumulated.

Sea temperature

In April, the average sea temperature in Cayo Guillermo, Cuba, is 26°C (78.8°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in Cayo Guillermo is 12.7h.

Sunshine

With an average of 9h of sunshine, April has the most sunshine of the year.

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index in Cayo Guillermo. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in April in Cayo Guillermo?

In Cayo Guillermo, Cuba, in April, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 19°C (66.2°F).

How many days does it rain in April in Cayo Guillermo?

In Cayo Guillermo, Cuba, in April, during 5 rainfall days, 60mm (2.4") of precipitation is typically accumulated.

What is the sea water temperature in April in Cayo Guillermo?

In Cayo Guillermo, Cuba, the average seawater temperature in April is 26°C (78.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in April in Cayo Guillermo?

In Cayo Guillermo, the average length of the day in April is 12.7h.

What month has the most sunshine in Cayo Guillermo?

The month with the most sunshine in Cayo Guillermo is April, with an average of 9h of sunshine.

How long on average sun shines in April in Cayo Guillermo?

In April, the average sunshine is 9h.

What are the months with the highest UV index in Cayo Guillermo?

Months with the highest UV index are April through August, with an average maximum UV index of 12.

How high is the UV index in April in Cayo Guillermo?

In April, the average daily maximum UV index in Cayo Guillermo is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in April - Cayo Guillermo, Cuba
  • Average high temperature in April: 31°C

Warmest months (with the highest average high temperature) are July and August (33°C).
The month with the lowest average high temperature is January (27°C).

  • Average low temperature in April: 19°C

Months with the highest average low temperature are June, July and August (23°C).
Coldest months (with the lowest average low temperature) are January and February (17°C).

Average rainfall in April - Cayo Guillermo, Cuba
  • Average rainfall in April: 60mm

The wettest month (with the highest rainfall) is October (182mm).
The driest month (with the lowest rainfall) is December (39mm).

Average rainfall days in April - Cayo Guillermo, Cuba
  • Average rainfall days in April: 5 days

The month with the highest number of rainy days is October (16 days).
Months with the lowest number of rainy days are February and April (5 days).

Average sea temperature in April - Cayo Guillermo, Cuba
  • Average sea temperature in April: 26°C

Best months for swimming (with the highest average sea temperature) are June, July, August, September and October (29°C).
Coldest months (with the lowest average sea temperature) are January, February and March (25°C).

Average daylight in April / Average sunshine in April - Cayo Guillermo, Cuba
  • Average daylight in April: 12.7h

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in April: 9h

The month with most sunshine is April (Average sunshine: 9h).
Months with least sunshine are January, February, June, September, October, November and December (Average sunshine: 7).

Average UV index in April - Cayo Guillermo, Cuba
  • Average UV index in April: 12

Months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).