September weather forecastDiliman, Philippines
September
Weather in September
The first month of the autumn, September, is still a hot month in Diliman, Philippines, with an average temperature varying between 25°C (77°F) and 30.7°C (87.3°F).Temperature
Diliman experiences a recorded average high-temperature of a still hot 30.7°C (87.3°F) in September, closely aligned with August's 30.3°C (86.5°F). Throughout September, Diliman anticipates an average low-temperature of 25°C (77°F).Heat index
In September, the heat index is computed to be a blistering 40°C (104°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Heat index determinations are made taking into account the shade and light air movements. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
The average relative humidity in September is 80%.Rainfall
In Diliman, during September, the rain falls for 20.3 days and regularly aggregates up to 58mm (2.28") of precipitation. Throughout the year, there are 154.9 rainfall days, and 349mm (13.74") of precipitation is accumulated.Daylight
In September, the average length of the day in Diliman is 12h and 13min.On the first day of the month, sunrise is at 5:43 am and sunset at 6:07 pm. On the last day of September, sunrise is at 5:45 am and sunset at 5:46 pm PST.
Sunshine
In Diliman, the average sunshine in September is 8.3h.UV index
February through December, with an average maximum UV index of 7, are months with the highest UV index in Diliman. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Diliman, Philippines
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is May (33.3°C).
The month with the lowest average high temperature is January (28.3°C).
- Average low temperature in September: 25°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.9°C).
Average pressure in September
Diliman, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1013.4mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).
Average wind speed in September
Diliman, Philippines
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is January (11.5km/h).
The calmest month (with the lowest average wind speed) is May (7.4km/h).
Average humidity in September
Diliman, Philippines
- Average humidity in September: 80%
The month with the highest relative humidity is August (81%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Diliman, Philippines
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is August (70mm).
The driest month (with the least rainfall) is February (3mm).
Average rainfall days in September
Diliman, Philippines
- Average rainfall days in September: 20.3 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is February (3.9 days).
Average daylight in September /
Average sunshine in September
Diliman, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in September
Diliman, Philippines
- Average sunshine days in September: 6.8 days
The month with the most sunshine days is March (18 days).
The month with the least sunshine days is June (6.4 days).
Average UV index in September
Diliman, Philippines
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in September
Diliman, Philippines
- Average cloud cover in September: 45
The month with the most cloud cover is August (Cloud cover 51).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in September
Diliman, Philippines
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August, September and October (9km).
