September weather forecast
Doña Imelda, Philippines

September, the first month of the autumn in Doña Imelda, is still a hot month, with temperature in the range of an average high of 30.5°C (86.9°F) and an average low of 24.8°C (76.6°F).

Temperature

The beginning of September reveals an average high-temperature of a still hot 30.5°C (86.9°F), showing minimal deviation from the previous month. September nights are marked by an average temperature drop to a moderately hot 24.8°C (76.6°F).

Heat index

The heat index value for September is estimated at an extremely hot 40°C (104°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

August and September, with an average relative humidity of 81%, are the most humid months in Doña Imelda.

Rainfall

In Doña Imelda, during September, the rain falls for 21 days and regularly aggregates up to 128mm (5.04") of precipitation. In Doña Imelda, during the entire year, the rain falls for 185 days and collects up to 830mm (32.68") of precipitation.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 5:43 am and sunset at 6:07 pm. On the last day of September, sunrise is at 5:45 am and sunset at 5:46 pm PST.

Sunshine

In Doña Imelda, the average sunshine in September is 8.4h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.