May weather forecastSan Julian, Philippines

Weather in May

May, the last month of the spring in San Julian, is a tropical month, with an average temperature fluctuating between 25.8°C (78.4°F) and 30.3°C (86.5°F).

Temperature

The shift into May records an average high-temperature of a hot 30.3°C (86.5°F), subtly varied from April's 29.1°C (84.4°F). The temperature in San Julian, Philippines, during May nights demonstrates a small drop from the daytime highs, settling to an average of 25.8°C (78.4°F).

Heat index

May's heat index is appraised at a torrid 39°C (102.2°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Records show heat index calculations are tailored for shaded regions 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 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In San Julian, Philippines, in May, it is raining for 17.2 days, with typically 70mm (2.76") of accumulated precipitation. Throughout the year, in San Julian, there are 246.8 rainfall days, and 1279mm (50.35") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 29.3°C (84.7°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 San Julian, Philippines, the average length of the day in May is 12h and 40min.
On the first day of May, sunrise is at 5:18 am and sunset at 5:52 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 5:59 pm PST.

Sunshine

In May, the average sunshine is 8.8h.

UV index

January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 7 during May translates into the following guidance:
Deter overexposure. Protecting against the sun's effects is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.