May weather forecast
Oranjestad, Aruba

Oranjestad, Aruba, experiences the full effect of summer creeping in during May. Despite the temperatures remaining relatively high, the humidity levels stay quite steady, contributing to a comforting atmosphere. The rainfall quantity slightly increases to approximately 16mm (0.63") spread over a period of 2.2 days. Coinciding with the weather, daylight hours are notably stretched, offering more hours to take pleasure in the sunlit enviorns. This month's prevailing conditions prompt thrilling coastal activities, with the seawater being appealing for both domestic and international tourists.

Temperature

Oranjestad notes an average high-temperature of a still hot 32°C (89.6°F) in May, hardly diverging from April. In May, Oranjestad experiences an average nighttime temperature of 26.5°C (79.7°F).

Heat index

Throughout May, the heat index is estimated at a blisteringly hot 43°C (109.4°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Oranjestad, the average relative humidity in May is 77.9%.

Rainfall

In Oranjestad, Aruba, in May, it is raining for 2.2 days, with typically 16mm (0.63") of accumulated precipitation. Throughout the year, there are 64.6 rainfall days, and 472mm (18.58") of precipitation is accumulated.

Sea temperature

In Oranjestad, the average seawater temperature in May is 27.6°C (81.7°F).
Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort.

Daylight

In Oranjestad, the average length of the day in May is 12h and 43min.
On the first day of May, sunrise is at 06:19 and sunset at 18:54. On the last day of the month, sunrise is at 06:13 and sunset at 19:02 AST.

Sunshine

In Oranjestad, the average sunshine in May is 4h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 12 in May interprets into the following recommendations:
Employ all critical precautions. Guarding against sun damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Be wary! Reflections from sand and water make UV radiation more intense.