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
With the onset of September, the average high-temperature stands at a still hot 30.9°C (87.6°F), closely aligned with August's 30.4°C (86.7°F). During the nights in September, an average low-temperature of 25.3°C (77.5°F) is observed.Heat index
Throughout September, the heat index is calculated to be a fiery hot 37°C (98.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 69%.Rainfall
In September, the rain falls for 18 days. Throughout September, 60mm (2.36") of precipitation is accumulated. In Cijantra, during the entire year, the rain falls for 284.6 days and collects up to 1327mm (52.24") of precipitation.Daylight
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 17:48 WIB.
Sunshine
In Cijantra, the average sunshine in September is 9.5h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. 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 risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the least humid months?
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?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index in Cijantra?
What is the month with the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Cijantra, Indonesia
- Average high temperature in September: 30.9°C
The warmest month (with the highest average high temperature) is October (31.3°C).
The month with the lowest average high temperature is January (29.6°C).
- Average low temperature in September: 25.3°C
The months with the highest average low temperature are October and November (26.5°C).
The coldest month (with the lowest average low temperature) is July (24.9°C).
Average pressure in September
Cijantra, Indonesia
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Cijantra, Indonesia
- Average wind speed in September: 8.7km/h
The windiest month (with the highest average wind speed) is January (12.6km/h).
The calmest months (with the lowest average wind speed) are September and November (8.7km/h).
Average humidity in September
Cijantra, Indonesia
- Average humidity in September: 69%
The months with the highest relative humidity are February and March (76%).
The months with the lowest relative humidity are September and October (69%).
Average rainfall in September
Cijantra, Indonesia
- Average rainfall in September: 60mm
The wettest month (with the highest rainfall) is February (162mm).
The driest month (with the least rainfall) is August (49mm).
Average rainfall days in September
Cijantra, Indonesia
- Average rainfall days in September: 18 days
The month with the highest number of rainy days is March (28.1 days).
The month with the least rainy days is August (15.3 days).
Average daylight in September /
Average sunshine in September
Cijantra, 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 3min
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 12min).
Average sunshine days in September
Cijantra, Indonesia
- Average sunshine days in September: 8 days
The month with the most sunshine days is August (10.5 days).
The month with the least sunshine days is March (1.8 days).
Average UV index in September
Cijantra, 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
Cijantra, Indonesia
- Average cloud cover in September: 25
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Cijantra, 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).
