September weather forecast
Arjawinangun, Indonesia

September

Weather in September

September, the first month of the spring in Arjawinangun, is still a tropical month, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 22.6°C (72.7°F).

Temperature

With the arrival of September, Arjawinangun's average high-temperature registers at a still hot 31.3°C (88.3°F), indicating a subtle variation from the previous month. Throughout the month of September, Arjawinangun sees a steady low-temperature average of 22.6°C (72.7°F).

Heat index

September's average heat index is computed to be a sweltering 38°C (100.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. 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.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

September and October, with an average relative humidity of 69%, are the least humid months in Arjawinangun.

Rainfall

In Arjawinangun, in September, it is raining for 9.5 days, with typically 18mm (0.71") of accumulated precipitation. In Arjawinangun, during the entire year, the rain falls for 222.3 days and collects up to 950mm (37.4") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, sunrise is at 05:31 and sunset at 17:41 WIB.

Sunshine

August and September, with an average of 9.7h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 during September translates into the following guidance:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

How hot does it get in Arjawinangun in September?
In Arjawinangun, in September, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 22.6°C (72.7°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 38°C (100.4°F).
What is the least humid month in Arjawinangun?
September and October, with an average relative humidity of 69%, are the least humid months in Arjawinangun.
What is the average humidity in September in Arjawinangun?
In Arjawinangun, the average relative humidity in September is 69%.
How much does it rain in Arjawinangun in September?
In Arjawinangun, in September, it is raining for 9.5 days, with typically 18mm (0.71") of accumulated precipitation.
What is the average length of the day in September in Arjawinangun?
In September, the average day length in Arjawinangun is 12h and 4min.
When is the sunrise / sunset in September in Arjawinangun?
In September, on the first day of the month, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, in Arjawinangun, sunrise is at 05:31 and sunset at 17:41 WIB.
What are the months with the most sunshine in Arjawinangun?
The months with the most sunshine are August and September, with an average of 9.7h of sunshine.
How long on average sun shines in September in Arjawinangun?
In Arjawinangun, Indonesia, the average sunshine duration in September is 9.7h.
What is the month with the highest UV index in Arjawinangun?
The months with the highest UV index in Arjawinangun, Indonesia, are January through December, with an average maximum UV index of 7.
When is the lowest UV index in Arjawinangun?
The months with the lowest UV index in Arjawinangun are January through December, with an average maximum UV index of 7.
What is the UV index reading in September in Arjawinangun?
The average daily maximum UV index in September in Arjawinangun, Indonesia, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Arjawinangun, Indonesia
  • Average high temperature in September: 31.3°C

The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is February (29.4°C).

  • Average low temperature in September: 22.6°C

The months with the highest average low temperature are November and December (25°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).

Average pressure in September
Arjawinangun, 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 (1009.2mbar).

Average wind speed in September
Arjawinangun, Indonesia
  • Average wind speed in September: 12.2km/h

The windiest month (with the highest average wind speed) is August (12.7km/h).
The calmest month (with the lowest average wind speed) is April (6.9km/h).

Average humidity in September
Arjawinangun, Indonesia
  • Average humidity in September: 69%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are September and October (69%).

Average rainfall in September
Arjawinangun, Indonesia
  • Average rainfall in September: 18mm

The wettest month (with the highest rainfall) is December (146mm).
The driest month (with the least rainfall) is August (10mm).

Average rainfall days in September
Arjawinangun, Indonesia
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is December (25.5 days).
The month with the least rainy days is August (6.5 days).

Average daylight in September /
Average sunshine in September
Arjawinangun, 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 42min).

  • Average sunshine in September: 9h and 4min

The months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 8h and 12min).

Average sunshine days in September
Arjawinangun, Indonesia
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is December (3.5 days).

Average UV index in September
Arjawinangun, 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
Arjawinangun, Indonesia
  • Average cloud cover in September: 19

The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Arjawinangun, 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).

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