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
As August turns into September, the average high-temperatures rest at a still tropical 31.4°C (88.5°F), showing a minor variation from the prior month. September nights in Sentul experience a consistent temperature drop to an agreeable 22.8°C (73°F).Heat index
The average heat index in September is estimated at a very 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.Given the heat index, its values are aligned with shaded sites and gentle winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
The least humid month is September, with an average relative humidity of 69%.Rainfall
In Sentul, during September, the rain falls for 9.8 days and regularly aggregates up to 18mm (0.71") of precipitation. Throughout the year, there are 221.5 rainfall days, and 926mm (36.46") of precipitation is accumulated.Daylight
In Sentul, Indonesia, 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
The months with the most sunshine are August and September, with an average of 9.7h of sunshine.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the least humid month?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Sentul have in September?
When is the sunrise / sunset in September?
What is the month with the most sunshine in Sentul?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the month with the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Sentul, Indonesia
- Average high temperature in September: 31.4°C
The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (29.4°C).
- Average low temperature in September: 22.8°C
The month with the highest average low temperature is December (24.8°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).
Average pressure in September
Sentul, Indonesia
- Average pressure in September: 1011.3mbar
The month with the highest atmospheric pressure is September (1011.3mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Sentul, Indonesia
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is August (12.7km/h).
The calmest month (with the lowest average wind speed) is December (6.8km/h).
Average humidity in September
Sentul, Indonesia
- Average humidity in September: 69%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is September (69%).
Average rainfall in September
Sentul, Indonesia
- Average rainfall in September: 18mm
The wettest months (with the highest rainfall) are February and March (142mm).
The driest month (with the least rainfall) is August (10mm).
Average rainfall days in September
Sentul, Indonesia
- Average rainfall days in September: 9.8 days
The months with the highest number of rainy days are March and December (25 days).
The month with the least rainy days is August (6.5 days).
Average daylight in September /
Average sunshine in September
Sentul, 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 months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 8h and 30min).
Average sunshine days in September
Sentul, Indonesia
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is December (4 days).
Average UV index in September
Sentul, 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
Sentul, Indonesia
- Average cloud cover in September: 20
The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Sentul, 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).
