September weather forecastSirsak, Indonesia
September
Weather in September
September, the first month of the spring in Sirsak, is still a hot month, with an average temperature fluctuating between 25.2°C (77.4°F) and 30.7°C (87.3°F).Temperature
As September takes hold, the average high-temperature is a still hot 30.7°C (87.3°F), nearly mirroring that of the previous month. Throughout September, the average low-temperature in Sirsak records at a moderately hot 25.2°C (77.4°F).Heat index
September's mean heat index is computed to be a sweltering 37°C (98.6°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. 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. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
September and October, with an average relative humidity of 69%, are the least humid months.Rainfall
In Sirsak, in September, during 17 rainfall days, 56mm (2.2") of precipitation is typically accumulated. In Sirsak, during the entire year, the rain falls for 283.6 days and collects up to 1323mm (52.09") of precipitation.Daylight
In Sirsak, 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 average sunshine in September in Sirsak is 9.7h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sirsak, Indonesia
- Average high temperature in September: 30.7°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: 25.2°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
Sirsak, 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
Sirsak, Indonesia
- Average wind speed in September: 8.6km/h
The windiest month (with the highest average wind speed) is January (12.6km/h).
The calmest month (with the lowest average wind speed) is September (8.6km/h).
Average humidity in September
Sirsak, 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
Sirsak, Indonesia
- Average rainfall in September: 56mm
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
Sirsak, Indonesia
- Average rainfall days in September: 17 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
Sirsak, Indonesia
- Average daylight in September: 12h and 6min
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 42min
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
Sirsak, Indonesia
- Average sunshine days in September: 8.6 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
Sirsak, 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
Sirsak, Indonesia
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are August and September (Cloud cover 22).
Average visibility in September
Sirsak, 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).





