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
Weather in September
Temperature
Istiqlal, Indonesia, experiences an average high-temperature of a still tropical 30.4°C (86.7°F) with the onset of September, subtly varied from August's 30.2°C (86.4°F). In September, in Istiqlal, Indonesia, the average low-temperature is a warm 24°C (75.2°F).Heat index
For September, the heat index is evaluated at a very hot 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Remember that heat index calculations are made for conditions in the shade with light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
The least humid month is September, with an average relative humidity of 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 19.5 days and typically collects 69mm (2.72") of precipitation.Daylight
In Istiqlal, the average length of the day in September is 12h and 7min.On the first day of September in Istiqlal, sunrise is at 05:36 and sunset at 17:44. On the last day of the month, sunrise is at 05:27 and sunset at 17:33 WITA.
Sunshine
September has the most sunshine of the year, with an average of 9.3h of sunshine.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 in Istiqlal, Indonesia, are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 7 in September translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot is it in Istiqlal in September?
What is the least humid month in Istiqlal?
What is the average humidity in September in Istiqlal?
What is the driest month in Istiqlal?
How much does it rain in Istiqlal in September?
How many hours of daylight does Istiqlal have in September?
What time are sunrise and sunset in September in Istiqlal?
What month has the most sunshine in Istiqlal?
How many hours of sunshine does Istiqlal have in September?
When is the highest UV index in Istiqlal?
What is the month with the lowest UV index in Istiqlal?
How high is the UV index in September in Istiqlal?
Average temperature in September
Istiqlal, Indonesia
- Average high temperature in September: 30.4°C
The warmest month (with the highest average high temperature) is October (30.5°C).
The month with the lowest average high temperature is February (28.1°C).
- Average low temperature in September: 24°C
The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is March (23.8°C).
Average pressure in September
Istiqlal, Indonesia
- Average pressure in September: 1010.1mbar
The month with the highest atmospheric pressure is September (1010.1mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Istiqlal, Indonesia
- Average wind speed in September: 5.7km/h
The windiest month (with the highest average wind speed) is February (8.2km/h).
The calmest month (with the lowest average wind speed) is May (5.3km/h).
Average humidity in September
Istiqlal, Indonesia
- Average humidity in September: 76%
The months with the highest relative humidity are January, February and March (83%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Istiqlal, Indonesia
- Average rainfall in September: 69mm
The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is September (69mm).
Average rainfall days in September
Istiqlal, Indonesia
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is May (28.3 days).
The month with the least rainy days is September (19.5 days).
Average daylight in September /
Average sunshine in September
Istiqlal, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 36min).
Average sunshine days in September
Istiqlal, Indonesia
- Average sunshine days in September: 8 days
The month with the most sunshine days is August (8.6 days).
The month with the least sunshine days is November (1 days).
Average UV index in September
Istiqlal, 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
Istiqlal, Indonesia
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in September
Istiqlal, 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).
Istiqlal, Indonesia
Weather forecast for your location
2. Allow the app to use your location
