Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's average high-temperature is a still warm 29.5°C (85.1°F), maintaining a close comparison with August's 29.1°C (84.4°F). During September, the average low-temperature is an agreeable 22.4°C (72.3°F).Heat index
In September, the average heat index is estimated at a very hot 38°C (100.4°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 86%.Rainfall
In Alfonso Castañeda, Philippines, in September, it is raining for 27.5 days, with typically 198mm (7.8") of accumulated precipitation. In Alfonso Castañeda, during the entire year, the rain falls for 262.6 days and collects up to 1411mm (55.55") of precipitation.Daylight
In Alfonso Castañeda, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 5:41 am and sunset at 6:07 pm. On the last day of September, sunrise is at 5:44 am and sunset at 5:44 pm PST.
Sunshine
In September, the average sunshine is 8.7h.UV index
The months with the highest UV index are March through June, August and September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the most humid months?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Alfonso Castañeda have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Alfonso Castañeda, Philippines
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is May (32.3°C).
The month with the lowest average high temperature is January (27.3°C).
- Average low temperature in September: 22.4°C
The month with the highest average low temperature is May (23.6°C).
The coldest month (with the lowest average low temperature) is January (19.9°C).
Average pressure in September
Alfonso Castañeda, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1014.1mbar).
The month with the lowest atmospheric pressure is August (1007.5mbar).
Average wind speed in September
Alfonso Castañeda, Philippines
- Average wind speed in September: 5.7km/h
The windiest month (with the highest average wind speed) is January (9.4km/h).
The calmest month (with the lowest average wind speed) is September (5.7km/h).
Average humidity in September
Alfonso Castañeda, Philippines
- Average humidity in September: 86%
The months with the highest relative humidity are August and September (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Alfonso Castañeda, Philippines
- Average rainfall in September: 198mm
The wettest month (with the highest rainfall) is July (249mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in September
Alfonso Castañeda, Philippines
- Average rainfall days in September: 27.5 days
The month with the highest number of rainy days is July (29.7 days).
The month with the least rainy days is February (16.3 days).
Average daylight in September /
Average sunshine in September
Alfonso Castañeda, Philippines
- Average daylight in September: 12h and 1min
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: 8h and 4min
The month with the most sunshine is April (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in September
Alfonso Castañeda, Philippines
- Average sunshine days in September: 1.4 days
The month with the most sunshine days is March (7.8 days).
The month with the least sunshine days is July (0.9 days).
Average UV index in September
Alfonso Castañeda, Philippines
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, August and September (UV index 7).
The months with the lowest UV index are January, February, July, October, November and December (UV index 6).
Average cloud cover in September
Alfonso Castañeda, Philippines
- Average cloud cover in September: 43
The month with the most cloud cover is August (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 27).
Average visibility in September
Alfonso Castañeda, Philippines
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
