May weather forecast
Puerto Princesa, Philippines

May, the last month of the spring in Puerto Princesa, is also a hot month, with temperature in the range of an average high of 32.5°C (90.5°F) and an average low of 24.5°C (76.1°F).

Temperature

In May, the average high-temperature is relatively the same as in April - a still tropical 32.5°C (90.5°F). In Puerto Princesa, the average low-temperature is 24.5°C (76.1°F).

Heat index

In May, the average heat index is computed to be a life-threatening hot 47.2°C (117°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, wind), 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 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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.

Humidity

In Puerto Princesa, the average relative humidity in May is 82%.

Rainfall

In May, the rain falls for 12 days. Throughout May, 142.4mm (5.61") of precipitation is accumulated. In Puerto Princesa, Philippines, during the entire year, the rain falls for 130 days and collects up to 1563.8mm (61.57") of precipitation.

Sea temperature

May and June, with an average sea temperature of 29.9°C (85.8°F), are months with the warmest seawater in Puerto Princesa.
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.

Daylight

The average length of the day in May in Puerto Princesa is 12h and 35min.
On the first day of the month, sunrise is at 5:47 am and sunset at 6:16 pm. On the last day of May, sunrise is at 5:42 am and sunset at 6:22 pm PST.

Sunshine

In May, the average sunshine in Puerto Princesa is 8h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Puerto Princesa. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for the average person.
Note: In May, the average maximum UV index of 12 translate into the following recommendations:
Practice all essential precautions. Protection against sun damage is crucial. 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. 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.