September weather forecast
Mapanas, Philippines

The first month of the autumn, September, is also a hot month in Mapanas, Philippines, with an average temperature fluctuating between 30.4°C (86.7°F) and 25.8°C (78.4°F).

Temperature

Mapanas marks the onset of September with an average high-temperature of a still hot 30.4°C (86.7°F), a subtle shift from August's 30.8°C (87.4°F). Mapanas's nighttime average temperature in September drops marginally from the daytime highs, settling at a moderately hot 25.8°C (78.4°F).

Heat index

The average heat index in September is calculated to be a very hot 39°C (102.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. 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 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in September in Mapanas is 79%.

Rainfall

In Mapanas, during September, the rain falls for 21.2 days and regularly aggregates up to 142mm (5.59") of precipitation. Throughout the year, in Mapanas, there are 283 rainfall days, and 1943mm (76.5") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature in Mapanas is 29.3°C (84.7°F).
Note: With water temperature from 25°C (77°F) to 29°C (84.2°F), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

The average length of the day in September in Mapanas is 12h and 12min.
On the first day of the month, sunrise is at 5:28 am and sunset at 5:49 pm. On the last day of September, sunrise is at 5:28 am and sunset at 5:29 pm PST.

Sunshine

In Mapanas, the average sunshine in September is 8.2h.

UV index

The months with the highest UV index are January through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. 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. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Warning! Sand and water reflections boost the intensity of UV exposure.