May weather forecast
San Marcelino, Philippines

The last month of the spring, May, is another tropical month in San Marcelino, Philippines, with an average temperature ranging between min 26.4°C (79.5°F) and max 31.4°C (88.5°F).

Temperature

In San Marcelino, the peak temperatures are generally noted in May, averaging a high of 31.4°C (88.5°F) and a low of 26.4°C (79.5°F).

Heat index

For most parts of May, the heat index is estimated at a scorching 40°C (104°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. 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. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In San Marcelino, the average relative humidity in May is 75%.

Rainfall

In May, in San Marcelino, Philippines, the rain falls for 25.1 days. Throughout May, 119mm (4.69") of precipitation is accumulated. In San Marcelino, during the entire year, the rain falls for 237.5 days and collects up to 1892mm (74.49") of precipitation.

Daylight

In May, the average length of the day is 12h and 50min.
On the first day of May, sunrise is at 5:35 am and sunset at 6:16 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 6:25 pm PST.

Sunshine

In San Marcelino, the average sunshine in May is 11.1h.

UV index

The months with the highest UV index in San Marcelino are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the UV index of 7 transforms into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.