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 onset records an average high-temperature of a still tropical 31.2°C (88.2°F), a near match to August's 31.1°C (88°F). Cilandak records an average low-temperature of 24.3°C (75.7°F) throughout the month of September.Heat index
The heat index in September is estimated at a fiery hot 38°C (100.4°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Always consider that heat index estimations are for light winds and places in the shade. 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 'real feel' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. 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. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
The average relative humidity in September is 69%.Rainfall
In September, the rain falls for 15.1 days. Throughout September, 45mm (1.77") of precipitation is accumulated. Throughout the year, there are 257.1 rainfall days, and 991mm (39.02") of precipitation is accumulated.Daylight
In Cilandak, the average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:52 and sunset at 17:52. On the last day of September, sunrise is at 05:37 and sunset at 17:47 WIB.
Sunshine
In September, the average sunshine is 9.6h.UV index
The months with the highest UV index 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 value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Cilandak?
How long on average sun shines in September?
When is the highest UV index?
What is the month with the lowest UV index in Cilandak?
What is the UV index intensity in September?
Average temperature in September
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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
Cilandak, 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).
