September weather forecastCalo, Philippines

Weather in September

The first month of the autumn, September, is also a moderately hot month in Calo, Philippines, with an average temperature varying between 23.5°C (74.3°F) and 29.6°C (85.3°F).

Temperature

A minimal variation is noted in Calo's average high-temperature at the onset of September, reaching a still warm 29.6°C (85.3°F) from August's 29.5°C (85.1°F). Calo, during the nights of September, experiences an average temperature drop to a still moderately hot 23.5°C (74.3°F).

Heat index

Throughout September, the heat index is estimated at a torrid 38°C (100.4°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

With an average relative humidity of 87%, September is the most humid month in Calo.

Rainfall

In Calo, in September, during 28.3 rainfall days, 235mm (9.25") of precipitation is typically accumulated. In Calo, during the entire year, the rain falls for 279.9 days and collects up to 1550mm (61.02") of precipitation.

Daylight

The average length of the day in September in Calo is 12h and 13min.
On the first day of the month, sunrise is at 5:43 am and sunset at 6:06 pm. On the last day of September, sunrise is at 5:44 am and sunset at 5:45 pm PST.

Sunshine

The average sunshine in September is 7.9h.

UV index

The months with the highest UV index in Calo, Philippines, are February through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.