April weather forecast and climate
Willemstad, Curaçao

The organized harbor city of Willemstad in Curaçao, with two small ships at the docks
The organized harbor city of Willemstad in Curaçao, with two small ships at the docks
April, like March, is another tropical spring month in Willemstad, Curaçao, with average temperature varying between 31.1°C (88°F) and 25.5°C (77.9°F).
An excellent water temperature of 27°C (80.6°F) and only 2.8 rainfall days, with 19.6mm (0.77") of accumulated rainfall, makes April a prime for swimming and other water activities.

Temperature

In April, the average high-temperature in Willemstad is essentially the same as in March - a still tropical 31.1°C (88°F). In April, in Willemstad, Curaçao, the average low-temperature is 25.5°C (77.9°F).

Heat index

In April, the average heat index is appraised at an extremely hot 40.2°C (104.4°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In April, the average relative humidity is 77.2%.

Rainfall

In Willemstad, during April, the rain falls for 2.8 days and regularly aggregates up to 19.6mm (0.77") of precipitation. In Willemstad, during the entire year, the rain falls for 69.4 days and collects up to 553.4mm (21.79") of precipitation.

Sea temperature

In Willemstad, in April, the average water temperature is 27°C (80.6°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

In April, the average length of the day in Willemstad, Curaçao, is 12.4h.

Sunshine

In Willemstad, Curaçao, the average sunshine in April is 8.2h.

UV index

Months with the highest UV index in Willemstad are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in April in Willemstad?

In Willemstad, Curaçao, in April, the average high-temperature is 31.1°C (88°F), and the average low-temperature is 25.5°C (77.9°F). The average heat index (a.k.a. 'feels like', 'real feel'), that factores the actual air temperature with the relative humidity, in April is calculated to 40.2°C (104.4°F).

What is the average humidity in April in Willemstad?

The average relative humidity in April in Willemstad is 77.2%.

How many days does it rain in April in Willemstad?

In April, the rain falls for 2.8 days. Throughout April, 19.6mm (0.77") of precipitation is accumulated.

What is the sea water temperature in April in Willemstad?

In April, the average sea temperature in Willemstad is 27°C (80.6°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.

How many hours of daylight does Willemstad have in April?

In April, the average length of the day in Willemstad, Curaçao, is 12.4h.

How long on average sun shines in April in Willemstad?

In Willemstad, the average sunshine in April is 8.2h.

When is the highest UV index in Willemstad?

Months with the highest UV index are February through September, with an average maximum UV index of 12.

How high is the UV index in April in Willemstad?

The average daily maximum UV index in April is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unprotected exposure to the UV radiation.
Average temperature in April - Willemstad, Curaçao
  • Average high temperature in April: 31.1°C

The warmest month (with the highest average high temperature) is September (32.6°C).
The month with the lowest average high temperature is January (29.7°C).

  • Average low temperature in April: 25.5°C

The month with the highest average low temperature is September (26.5°C).
The coldest month (with the lowest average low temperature) is January (24.3°C).

Average humidity in April - Willemstad, Curaçao
  • Average humidity in April: 77.2%

The month with the highest relative humidity is November (79.6%).
The month with the lowest relative humidity is March (76.1%).

Average rainfall in April - Willemstad, Curaçao
  • Average rainfall in April: 19.6mm

The wettest month (with the highest rainfall) is December (99.8mm).
The driest month (with the least rainfall) is March (14.2mm).

Average rainfall days in April - Willemstad, Curaçao
  • Average rainfall days in April: 2.8 days

The month with the highest number of rainy days is December (11.5 days).
The month with the least rainy days is May (2 days).

Average sea temperature in April - Willemstad, Curaçao
  • Average sea temperature in April: 27°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

Average daylight in April / Average sunshine in April - Willemstad, Curaçao
  • Average daylight in April: 12.4h

Months with the longest days are June and July (Average daylight: 12.8h).
The month with the shortest days is December (Average daylight: 11.4h).

  • Average sunshine in April: 8.2h

The month with the most sunshine is August (Average sunshine: 9.5h).
The month with the least sunshine is December (Average sunshine: 7.8h).

Average UV index in April - Willemstad, Curaçao
  • Average UV index in April: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).