May weather forecast
Mandaluyong, Philippines

Following the hot April, May ushers the start of the rainy season in Mandaluyong, with rainfall volumes shooting up to 39mm (1.54"). Despite the increase in rainfall, May still enjoys an average of 11.1 hours of sunshine per day. The daily high temperatures slightly fall compared to April, yet the city experiences its highest low temperatures in this month. As May turns into June, the weather becomes even wetter with a significant rise in rain amounts and number of rainy days.

Temperature

In Mandaluyong, the highest average temperatures are observed in May, with a high of 33.3°C (91.9°F) and a low of 26.4°C (79.5°F).

Heat index

In May, the heat index is estimated at a life-threatening hot 45°C (113°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in May is 72%.

Rainfall

In Mandaluyong, in May, it is raining for 15.4 days, with typically 39mm (1.54") of accumulated precipitation. In Mandaluyong, during the entire year, the rain falls for 171.4 days and collects up to 715mm (28.15") of precipitation.

Sea temperature

In Mandaluyong, in May, the average water temperature is 29.6°C (85.3°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

In May, the average length of the day is 12h and 49min.
On the first day of May in Mandaluyong, sunrise is at 5:33 am and sunset at 6:12 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 6:21 pm PST.

Sunshine

In May, the average sunshine is 11.1h.

UV index

The months with the highest UV index are February through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 7 in May transforms into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.