September weather forecastCalasiao, Philippines
September
Weather in September
September, the first month of the autumn in Calasiao, is still a tropical month, with an average temperature fluctuating between 30.7°C (87.3°F) and 23.9°C (75°F).Temperature
The start of September sees the average high-temperature at a still tropical 30.7°C (87.3°F), showing little difference from August's 30.5°C (86.9°F). Calasiao, during the month of September, experiences an average low-temperature of 23.9°C (75°F).Heat index
For September, the heat index is computed to be an extremely hot 41°C (105.8°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Heat index determinations are made taking into account the shade and light air movements. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The most humid month is September, with an average relative humidity of 83%.Rainfall
In Calasiao, in September, it is raining for 25.1 days, with typically 180mm (7.09") of accumulated precipitation. In Calasiao, during the entire year, the rain falls for 187.6 days and collects up to 1079mm (42.48") of precipitation.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 5:45 am and sunset at 6:11 pm. On the last day of September, sunrise is at 5:48 am and sunset at 5:48 pm PST.
Sunshine
In September, the average sunshine is 9.2h.UV index
The months with the highest UV index in Calasiao are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Guard oneself from overexposure. Defence against sun injury is vital. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Calasiao, Philippines
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is April (34.5°C).
The month with the lowest average high temperature is August (30.5°C).
- Average low temperature in September: 23.9°C
The month with the highest average low temperature is May (25.5°C).
The coldest month (with the lowest average low temperature) is January (21.6°C).
Average pressure in September
Calasiao, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1013.8mbar).
The month with the lowest atmospheric pressure is August (1007.5mbar).
Average wind speed in September
Calasiao, Philippines
- Average wind speed in September: 7.3km/h
The windiest months (with the highest average wind speed) are January, February and April (8.2km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).
Average humidity in September
Calasiao, Philippines
- Average humidity in September: 83%
The month with the highest relative humidity is September (83%).
The months with the lowest relative humidity are March and April (67%).
Average rainfall in September
Calasiao, Philippines
- Average rainfall in September: 180mm
The wettest month (with the highest rainfall) is August (240mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in September
Calasiao, Philippines
- Average rainfall days in September: 25.1 days
The month with the highest number of rainy days is July (28.4 days).
The month with the least rainy days is January (3.8 days).
Average daylight in September /
Average sunshine in September
Calasiao, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is April (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 7h and 24min).
Average sunshine days in September
Calasiao, Philippines
- Average sunshine days in September: 3.4 days
The month with the most sunshine days is January (26.8 days).
The month with the least sunshine days is July (2 days).
Average UV index in September
Calasiao, Philippines
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Calasiao, Philippines
- Average cloud cover in September: 38
The month with the most cloud cover is August (Cloud cover 45).
The months with the least cloud cover are January, February and December (Cloud cover 20).
Average visibility in September
Calasiao, Philippines
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are June, July, August, September and October (9km).
