, the same as March
, in Puerto Princesa
, is another hot spring month, with temperature in the range of an average high of 32.9°C (91.2°F) and an average low of 24.2°C (75.6°F).
The ideal sea water temperature of 28.8°C (83.8°F) and only 5 rainfall days, with 42.4mm (1.67") of accumulated rainfall, makes April the best time for swimming and other water activities.
April is the warmest month, with an average high-temperature of 32.9°C (91.2°F) and an average low-temperature of 24.2°C (75.6°F).
The average heat index is evaluated at a burning hot 47.8°C (118°F). Be wary
: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. 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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, metabolic differences, differences in body mass, height, and shape). 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. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.
In Puerto Princesa, the average relative humidity is 80%.
In April, the rain falls for 5 days. Throughout April, 42.4mm (1.67") of precipitation is accumulated. Throughout the year, in Puerto Princesa, there are 130 rainfall days, and 1563.8mm (61.57") of precipitation is accumulated.
In April, the average sea temperature is 28.8°C (83.8°F).Note
: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
In April, the average length of the day in Puerto Princesa is 12.4h.
April has the most sunshine of the year, with an average of 9h of sunshine.
Months with the highest UV index are February
, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the 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 necessary precautions, as unprotected skin 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 reflection of water and sand dramatically increases exposure to the UV rays.