September weather forecastIbu, Indonesia
September
Weather in September
The first month of the autumn, September, is still a warm month in Ibu, Indonesia, with an average temperature varying between 25.4°C (77.7°F) and 29.5°C (85.1°F).Temperature
The transition from August to September sees average high-temperatures adjusting to a still warm 29.5°C (85.1°F), from a not significantly different 29.3°C (84.7°F). September nights experience a minor temperature downturn to a still warm 25.4°C (77.7°F).Heat index
During September, the heat index is evaluated at a sweltering 36°C (96.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating 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. 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 hold particular importance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In Ibu, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 20.5 days and typically collects 73mm (2.87") of precipitation.Daylight
The average length of the day in September is 12h and 7min.On the first day of the month, sunrise is at 06:25 and sunset at 18:33. On the last day of September, sunrise is at 06:16 and sunset at 18:22 WIT.
Sunshine
September has the most sunshine of the year, with an average of 9h of sunshine.UV index
January through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability 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:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ibu, Indonesia
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is May (30.2°C).
The month with the lowest average high temperature is January (28.8°C).
- Average low temperature in September: 25.4°C
The month with the highest average low temperature is November (26.4°C).
The coldest month (with the lowest average low temperature) is August (25.3°C).
Average pressure in September
Ibu, Indonesia
- Average pressure in September: 1009.9mbar
The month with the highest atmospheric pressure is September (1009.9mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in September
Ibu, Indonesia
- Average wind speed in September: 8.6km/h
The windiest month (with the highest average wind speed) is February (9.6km/h).
The calmest month (with the lowest average wind speed) is May (6.1km/h).
Average humidity in September
Ibu, Indonesia
- Average humidity in September: 78%
The months with the highest relative humidity are January, February and March (80%).
The months with the lowest relative humidity are October and November (77%).
Average rainfall in September
Ibu, Indonesia
- Average rainfall in September: 73mm
The wettest month (with the highest rainfall) is January (204mm).
The driest month (with the least rainfall) is September (73mm).
Average rainfall days in September
Ibu, Indonesia
- Average rainfall days in September: 20.5 days
The month with the highest number of rainy days is May (27.8 days).
The month with the least rainy days is September (20.5 days).
Average daylight in September /
Average sunshine in September
Ibu, Indonesia
- Average daylight in September: 12h and 6min
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
The month with the most sunshine is September (Average sunshine: 9h).
The month with the least sunshine is June (Average sunshine: 8h).
Average sunshine days in September
Ibu, Indonesia
- Average sunshine days in September: 6.6 days
The month with the most sunshine days is October (6.7 days).
The month with the least sunshine days is April (1.9 days).
Average UV index in September
Ibu, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are November and December (UV index 6).
Average cloud cover in September
Ibu, Indonesia
- Average cloud cover in September: 33
The month with the most cloud cover is June (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 32).
Average visibility in September
Ibu, 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).
