September weather forecastArjasari, Indonesia
September
Weather in September
September, the first month of the spring in Arjasari, is also a moderately hot month, with an average temperature varying between 29.2°C (84.6°F) and 19.1°C (66.4°F).Temperature
The warmest period is September, when temperatures fluctuate between an average high of 29.2°C (84.6°F) and a low of 19.1°C (66.4°F).Heat index
September's average heat index is appraised at a hot 33°C (91.4°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunshine, the heat index could climb by 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. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
With an average relative humidity of 71%, September is the least humid month.Rainfall
In Arjasari, in September, it is raining for 19.7 days, with typically 90mm (3.54") of accumulated precipitation. Throughout the year, there are 306.6 rainfall days, and 2847mm (112.09") of precipitation is accumulated.Daylight
In Arjasari, the average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:49 and sunset at 17:48. On the last day of September, in Arjasari, sunrise is at 05:34 and sunset at 17:44 WIB.
Sunshine
September has the most sunshine of the year, with an average of 9.2h of sunshine.UV index
The months with the highest UV index in Arjasari are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, 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 ordinary individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arjasari, Indonesia
- Average high temperature in September: 29.2°C
The warmest month (with the highest average high temperature) is September (29.2°C).
The month with the lowest average high temperature is January (25.6°C).
- Average low temperature in September: 19.1°C
The month with the highest average low temperature is November (21.1°C).
The coldest month (with the lowest average low temperature) is July (18.6°C).
Average pressure in September
Arjasari, Indonesia
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is September (1011.4mbar).
The month with the lowest atmospheric pressure is December (1009.3mbar).
Average wind speed in September
Arjasari, Indonesia
- Average wind speed in September: 5.3km/h
The windiest month (with the highest average wind speed) is January (6.5km/h).
The calmest month (with the lowest average wind speed) is April (4.3km/h).
Average humidity in September
Arjasari, Indonesia
- Average humidity in September: 71%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (71%).
Average rainfall in September
Arjasari, Indonesia
- Average rainfall in September: 90mm
The wettest month (with the highest rainfall) is December (387mm).
The driest month (with the least rainfall) is August (66mm).
Average rainfall days in September
Arjasari, Indonesia
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is March (30.5 days).
The month with the least rainy days is August (16.5 days).
Average daylight in September /
Average sunshine in September
Arjasari, 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 42min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is July (Average sunshine: 6h and 48min).
Average sunshine days in September
Arjasari, Indonesia
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is August (12.3 days).
The month with the least sunshine days is February (0.1 days).
Average UV index in September
Arjasari, Indonesia
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Arjasari, Indonesia
- Average cloud cover in September: 30
The months with the most cloud cover are January and February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Arjasari, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are August, September, October and November (9km).
The months with the lowest visibility are January, February, March, April, May, June, July and December (8km).





