September Weather in Bireun, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Bireun, Indonesia is a warm 27°C (82°F), with a minimum of 24°C (75°F) and a maximum reaching up to 32°C (90°F). Expect a total precipitation of 198 mm (7.8 in) spread across 23 days, contributing to an average humidity of 86%.

September Temperature in Bireun

In September in Bireun, the average temperature is 27°C (82°F), with maximums reaching up to 32°C (90°F) and minimums dropping to as low as 24°C (75°F). This mild and warm climate makes Bireun an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Bireun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bireun, September typically has an average temperature of 27°C (82°F), with highs reaching up to 32°C (90°F) and lows dropping to around 24°C (75°F).

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

September Precipitation in Bireun

In Bireun in September, the precipitation amount is 198 mm (7.8 in) over the course of 23 days.

September Precipitation Trends in Bireun

The chart displays monthly precipitation patterns in Bireun, 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 Bireun, September typically receives around 198 mm (7.8 inches) of precipitation spread over approximately 23 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 Bireun

In Bireun in September humidity is 86%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities a challenge and necessitating frequent breaks to stay hydrated while traveling.

September Average Humidity in Bireun

This chart illustrates the average monthly humidity levels in Bireun, 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 Bireun is approximately 86%, 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 Bireun

In Bireun in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Bireun, you can check here.

Maximum UV Index Levels in Bireun for September

The chart shows the monthly maximum UV Index (UVI) for Bireun 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 Bireun typically reaches 14, which falls under the extreme exposure category.

Data source: Bireun 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 Bireun Compares to Other Months

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

This table compares monthly weather conditions in Bireun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	156 mm (6.2 inches)	80%	extreme
February Weather	27°C (81°F)	85 mm (3.3 inches)	73%	extreme
March Weather	28°C (82°F)	165 mm (6.5 inches)	74%	extreme
April Weather	28°C (82°F)	189 mm (7.5 inches)	69%	extreme
May Weather	28°C (83°F)	300 mm (11.8 inches)	75%	extreme
June Weather	28°C (83°F)	134 mm (5.3 inches)	81%	extreme
July Weather	28°C (83°F)	145 mm (5.7 inches)	79%	extreme
August Weather	28°C (83°F)	159 mm (6.3 inches)	84%	extreme
September Weather	27°C (82°F)	198 mm (7.8 inches)	86%	extreme
October Weather	27°C (81°F)	282 mm (11.1 inches)	86%	extreme
November Weather	27°C (81°F)	384 mm (15.1 inches)	86%	extreme
December Weather	27°C (80°F)	415 mm (16.3 inches)	86%	extreme