September weather forecast
Casian, Philippines

September, the first month of the autumn in Casian, is also a moderately hot month, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 26.9°C (80.4°F).

Temperature

Casian's shift into September sets the average high-temperature at a still moderately hot 29.1°C (84.4°F), a figure that deviates only slightly from August's 29.6°C (85.3°F). An average low-temperature of 26.9°C (80.4°F) characterizes Casian's September nights.

Heat index

September's mean heat index is estimated at a fiery hot 35°C (95°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. 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. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

September is the most humid month, with an average relative humidity of 79%.

Rainfall

In September, in Casian, the rain falls for 26.9 days. Throughout September, 160mm (6.3") of precipitation is accumulated. In Casian, during the entire year, the rain falls for 259.3 days and collects up to 1372mm (54.02") of precipitation.

Sea temperature

In September, the average sea temperature is 28.6°C (83.5°F).
Note: In any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

In Casian, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 5:51 am and sunset at 6:10 pm. On the last day of September, in Casian, sunrise is at 5:49 am and sunset at 5:52 pm PST.

Sunshine

The average sunshine in September is 8.8h.

UV index

January through June, August through December, with an average maximum UV index of 7, are months with the highest UV index in Casian, Philippines. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice! Sand and water reflections contribute to a stronger UV exposure.