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September Weather in Arso, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Arso, Indonesia hovers around 26°C (80°F). Expect a comfortable range, with minimums dipping to 21°C (70°F) and maximums soaring up to 34°C (93°F). However, be prepared for frequent rain; an average precipitation of 205 mm (8.1 in) falls over approximately 24 days, accompanied by a notable average humidity of 86%.

September Temperature in Arso

In September in Arso, the average temperature is 26°C (80°F). Maximums can reach 34°C (93°F), while minimums can be as low as 21°C (70°F). This pleasant climate makes Arso an inviting destination for travelers seeking warm and comfortable weather.

September Weather in Arso: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Arso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arso, September typically has an average temperature of 26°C (80°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec807979798079787979807980
Data source: Temperature data for Arso generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Arso

In Arso in September, the precipitation amount is 205 mm (8.1 in) over a span of 24 days.

September Precipitation Trends in Arso

The chart displays monthly precipitation patterns in Arso, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Arso, September typically receives around 205 mm (8.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec200270351314243202253203205242326317
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Arso

In Arso in September humidity is 86%. With an average temperature of 26°C (80°F), this humidity feels like a thick, warm blanket enveloping you, making travel feel exhausting and sticky, as sweat clings to your skin and every step becomes a laborious task in the sweltering conditions.

September Average Humidity in Arso

This chart illustrates the average monthly humidity levels in Arso, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Arso is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%83%85%84%85%85%87%86%86%85%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arso

In Arso in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Arso.

Maximum UV Index Levels in Arso for September

The chart shows the monthly maximum UV Index (UVI) for Arso in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Arso typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151717161312121315151514
Data source: Arso September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Arso Compares to Other Months

Weather in Arso varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Arso, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Arso, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)200 mm (7.9 inches)84%extreme
February Weather26°C (79°F)270 mm (10.6 inches)84%extreme
March Weather26°C (79°F)351 mm (13.8 inches)83%extreme
April Weather26°C (79°F)314 mm (12.4 inches)85%extreme
May Weather26°C (80°F)243 mm (9.6 inches)84%extreme
June Weather26°C (79°F)202 mm (8.0 inches)85%extreme
July Weather26°C (79°F)253 mm (10.0 inches)85%extreme
August Weather26°C (79°F)203 mm (8.0 inches)86%extreme
September Weather26°C (80°F)205 mm (8.1 inches)86%extreme
October Weather27°C (80°F)242 mm (9.5 inches)85%extreme
November Weather26°C (80°F)326 mm (12.8 inches)85%extreme
December Weather26°C (80°F)317 mm (12.5 inches)84%extreme

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