May weather forecast
Guiljungan, Philippines

The last month of the spring, May, is another hot month in Guiljungan, Philippines, with an average temperature ranging between max 30.2°C (86.4°F) and min 24.8°C (76.6°F).

Temperature

The transition into May shows a subtle variation to a still hot 30.2°C (86.4°F) from April's 30.5°C (86.9°F) in the average high-temperature. During May, the nighttime temperature averages of 24.8°C (76.6°F).

Heat index

Throughout May, the heat index is estimated at a torrid 38°C (100.4°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 are especially vital to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in May is 78%.

Rainfall

In Guiljungan, in May, it is raining for 27.6 days, with typically 199mm (7.83") of accumulated precipitation. In Guiljungan, during the entire year, the rain falls for 263.7 days and collects up to 1604mm (63.15") of precipitation.

Sea temperature

In Guiljungan, in May, the average water temperature is 29.4°C (84.9°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

The average length of the day in May is 12h and 35min.
On the first day of the month, sunrise is at 5:31 am and sunset at 6:00 pm. On the last day of May, sunrise is at 5:27 am and sunset at 6:07 pm PST.

Sunshine

With an average of 10.1h of sunshine, May has the most sunshine of the year.

UV index

February through June, August, September and November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Caution! The mirror effect of sand and water ups the UV radiation strength.