September weather forecast
Kalunasan, Philippines

The first month of the autumn, September, is still a warm month in Kalunasan, Philippines, with an average temperature ranging between min 25.5°C (77.9°F) and max 29.6°C (85.3°F).

Temperature

With the arrival of September, Kalunasan's average high-temperature registers at a still moderately hot 29.6°C (85.3°F), indicating a subtle variation from the previous month. Kalunasan's average temperature throughout the nights in September exhibits a minor decrease from daytime highs, stabilizing at a still moderately hot 25.5°C (77.9°F).

Heat index

September's mean heat index is calculated to be a torrid 36°C (96.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Kalunasan, the average relative humidity in September is 77%.

Rainfall

In September, the rain falls for 20 days. Throughout September, 50mm (1.97") of precipitation is accumulated. In Kalunasan, during the entire year, the rain falls for 248.5 days and collects up to 824mm (32.44") of precipitation.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 5:34 am and sunset at 5:53 pm. On the last day of September, sunrise is at 5:33 am and sunset at 5:35 pm PST.

Sunshine

In September, the average sunshine in Kalunasan is 8.3h.

UV index

The months with the highest UV index in Kalunasan are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Kalunasan are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.