April weather forecast
Oranjestad, Aruba

April, the same as March, in Oranjestad, Aruba, is another tropical spring month, with an average temperature varying between 31.5°C (88.7°F) and 25.8°C (78.4°F).
The ideal sea water temperature of 26.8°C (80.2°F) and only 1.9 rainfall days, with 12mm (0.47") of accumulated rainfall, makes April the best time for swimming and other water activities.

Temperature

In Oranjestad, the average high-temperature in April is essentially the same as in March - a still hot 31.5°C (88.7°F). In Oranjestad, in April, the average low-temperature is 25.8°C (78.4°F).

Heat index

The average heat index in April is computed to be an extremely hot 41°C (105.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With 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 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like pregnancy, clothing, wind, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
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 exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in April in Oranjestad is 77.1%.

Rainfall

In Oranjestad, in April, during 1.9 rainfall days, 12mm (0.47") of precipitation is typically accumulated. In Oranjestad, during the entire year, the rain falls for 64.6 days and collects up to 472mm (18.58") of precipitation.

Sea temperature

In April, the average sea temperature in Oranjestad is 26.8°C (80.2°F).
Note: 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.

Daylight

In Oranjestad, the average length of the day in April is 12h and 25min.
On the first day of the month, sunrise is at 06:36 and sunset at 18:51. On the last day of April, sunrise is at 06:20 and sunset at 18:54 AST.

Sunshine

The month with the least sunshine is April, with an average of 3h of sunshine.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index in Oranjestad. A UV Index estimate of 11, and higher, represents an extreme threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 in April 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.