September Weather in Siabu, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Siabu, Indonesia hovers around 24°C (75°F). Visitors can expect a minimum of 17°C (63°F) and a maximum of 32°C (90°F). Rainfall is quite frequent, with an average precipitation of 280 mm (11.0 in) spread over 27 days. Humidity levels are high, averaging 87%, creating a humid atmosphere throughout the month.

September Temperature in Siabu

In September in Siabu, the average temperature is 24°C (75°F). Maximums can reach 32°C (90°F) and minimums can be as low as 17°C (63°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Siabu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siabu, September typically has an average temperature of 24°C (75°F), with highs reaching up to 32°C (90°F) and lows dropping to around 17°C (63°F).

Data source: Temperature data for Siabu generated using information from the Copernicus Climate Change Service.

September Precipitation in Siabu

In Siabu, in September, the precipitation amount is 280 mm (11.0 in) spread across 27 days.

September Precipitation Trends in Siabu

The chart displays monthly precipitation patterns in Siabu, 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 Siabu, September typically receives around 280 mm (11.0 inches) of precipitation spread over approximately 27 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Siabu

In Siabu in September, humidity is 87%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace that clings to your skin, making outdoor activities feel heavier and more exhausting, and the air thickens, leaving you longing for shade and refreshing breezes as you navigate your adventures.

September Average Humidity in Siabu

This chart illustrates the average monthly humidity levels in Siabu, 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 Siabu is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Siabu

In Siabu 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 Siabu.

Maximum UV Index Levels in Siabu for September

The chart shows the monthly maximum UV Index (UVI) for Siabu 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 Siabu typically reaches 15, which falls under the extreme exposure category.

Data source: Siabu 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 Siabu Compares to Other Months

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

This table compares monthly weather conditions in Siabu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	168 mm (6.6 inches)	81%	extreme
February Weather	24°C (76°F)	166 mm (6.5 inches)	75%	extreme
March Weather	24°C (76°F)	251 mm (9.9 inches)	78%	extreme
April Weather	24°C (76°F)	303 mm (11.9 inches)	80%	extreme
May Weather	24°C (76°F)	270 mm (10.6 inches)	83%	extreme
June Weather	24°C (76°F)	179 mm (7.1 inches)	84%	extreme
July Weather	24°C (75°F)	191 mm (7.5 inches)	83%	extreme
August Weather	24°C (75°F)	214 mm (8.4 inches)	86%	extreme
September Weather	24°C (75°F)	280 mm (11.0 inches)	87%	extreme
October Weather	24°C (75°F)	315 mm (12.4 inches)	88%	extreme
November Weather	23°C (74°F)	368 mm (14.5 inches)	87%	extreme
December Weather	24°C (75°F)	315 mm (12.4 inches)	85%	extreme