September Weather in Bontang Baru, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Bontang Baru, Indonesia hovers around 27°C (81°F), with a comfortable minimum of 24°C (76°F) and a warm maximum of 30°C (86°F). Expect 160 mm (6.3 in) of precipitation over approximately 20 days, leading to an average humidity of 84%. Prepare for a humid yet pleasant experience!

September Temperature in Bontang Baru

In September in Bontang Baru, the average temperature is 27°C (81°F), with maximums reaching 30°C (86°F) and minimums dropping to as low as 24°C (76°F). It's a great time to visit for those who enjoy warm, pleasant weather.

September Weather in Bontang Baru: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bontang Baru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bontang Baru, September typically has an average temperature of 27°C (81°F), with highs reaching up to 30°C (86°F) and lows dropping to around 24°C (76°F).

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

September Precipitation in Bontang Baru

In Bontang Baru in September, the precipitation amount is 160 mm (6.3 in) over the course of 20 days.

September Precipitation Trends in Bontang Baru

The chart displays monthly precipitation patterns in Bontang Baru, 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 Bontang Baru, September typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 20 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 Bontang Baru

In Bontang Baru in September humidity is 84%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, moist blanket, making travel uncomfortable and sticky, as every step seems to weigh you down with the heavy air.

September Average Humidity in Bontang Baru

This chart illustrates the average monthly humidity levels in Bontang Baru, 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 Bontang Baru is approximately 84%, 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 Bontang Baru

In Bontang Baru 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 Bontang Baru, you can check here.

Maximum UV Index Levels in Bontang Baru for September

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

Data source: Bontang Baru 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 Bontang Baru Compares to Other Months

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

This table compares monthly weather conditions in Bontang Baru, 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)	199 mm (7.8 inches)	88%	extreme
February Weather	27°C (81°F)	190 mm (7.5 inches)	87%	extreme
March Weather	27°C (81°F)	237 mm (9.3 inches)	88%	extreme
April Weather	27°C (81°F)	224 mm (8.8 inches)	86%	extreme
May Weather	27°C (82°F)	214 mm (8.4 inches)	84%	extreme
June Weather	27°C (81°F)	213 mm (8.4 inches)	85%	extreme
July Weather	27°C (81°F)	185 mm (7.3 inches)	86%	extreme
August Weather	27°C (81°F)	156 mm (6.2 inches)	87%	extreme
September Weather	27°C (81°F)	160 mm (6.3 inches)	84%	extreme
October Weather	27°C (81°F)	197 mm (7.8 inches)	84%	extreme
November Weather	27°C (81°F)	248 mm (9.8 inches)	84%	extreme
December Weather	27°C (81°F)	277 mm (10.9 inches)	85%	extreme