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
Serpong's shift into September sets the average high-temperature at a still hot 31.2°C (88.2°F), a figure that deviates only slightly from August's 31.1°C (88°F). In September, the temperature in Serpong drops to an average of 24.3°C (75.7°F) at night.Heat index
In September, the heat index is estimated at a torrid 38°C (100.4°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Always consider that heat index estimations are for light winds and places in the shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
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. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. 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 are of high significance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In September, the average relative humidity is 69%.Rainfall
In September, in Serpong, the rain falls for 15.1 days. Throughout September, 45mm (1.77") of precipitation is accumulated. Throughout the year, in Serpong, there are 257.1 rainfall days, and 991mm (39.02") of precipitation is accumulated.Daylight
In Serpong, Indonesia, the average length of the day in September is 12h and 4min.On the first day of September, sunrise is at 05:53 and sunset at 17:53. On the last day of the month, sunrise is at 05:38 and sunset at 17:47 WIB.
Sunshine
In Serpong, the average sunshine in September is 9.6h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Serpong. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 7 in September translates into this advice:
Fend off overexposure. Sun protection is vital. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Serpong during September?
What is the average humidity in September in Serpong?
How many days does it rain in September in Serpong?
What is the average length of the day in September in Serpong?
What time are sunrise and sunset in September in Serpong?
How many hours of sunshine does Serpong have in September?
What are the months with the highest UV index in Serpong?
What are the months with the lowest UV index in Serpong?
What is the UV index intensity in September in Serpong?
Average temperature in September
Serpong, Indonesia
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is February (29.6°C).
- Average low temperature in September: 24.3°C
The month with the highest average low temperature is November (25.8°C).
The coldest month (with the lowest average low temperature) is July (24°C).
Average pressure in September
Serpong, Indonesia
- Average pressure in September: 1011.1mbar
The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Serpong, Indonesia
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is January (11.2km/h).
The calmest month (with the lowest average wind speed) is November (7.5km/h).
Average humidity in September
Serpong, Indonesia
- Average humidity in September: 69%
The months with the highest relative humidity are February and March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Serpong, Indonesia
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is March (119mm).
The driest month (with the least rainfall) is August (36mm).
Average rainfall days in September
Serpong, Indonesia
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is March (26.4 days).
The month with the least rainy days is August (12.5 days).
Average daylight in September /
Average sunshine in September
Serpong, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is March (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in September
Serpong, Indonesia
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is August (15.2 days).
The month with the least sunshine days is February (2.6 days).
Average UV index in September
Serpong, Indonesia
- 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
Serpong, Indonesia
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Serpong, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
