September Weather in Bali, China

Last updated: August 22, 2025

In Bali, China, the average temperature in September hovers around 12°C (54°F), with minimums plummeting to 2°C (36°F) and maximums reaching up to 22°C (73°F). Expect 104 mm (4.1 in) of precipitation spread over 16 days, contributing to an average humidity of 87% that adds a touch of moisture to the air.

September Temperature in Bali

In September in Bali, the average temperature is 12°C (54°F). Maximum temperatures can reach 22°C (73°F), while minimums can drop as low as 2°C (36°F). This climate makes it a perfect time for travelers to enjoy outdoor activities while being prepared for some cooler evenings.

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

The chart illustrates September temperature patterns in Bali, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bali, September typically has an average temperature of 12°C (54°F), with highs reaching up to 22°C (73°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Bali

In Bali in September, the total precipitation amount is 104 mm (4.1 in), distributed over 16 days.

September Precipitation Trends in Bali

The chart displays monthly precipitation patterns in Bali, 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 Bali, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 16 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 Bali

In Bali in September humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

September Average Humidity in Bali

This chart illustrates the average monthly humidity levels in Bali, 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 Bali 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 Bali

In Bali in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Bali.

Maximum UV Index Levels in Bali for September

The chart shows the monthly maximum UV Index (UVI) for Bali 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 Bali typically reaches 12, which falls under the extreme exposure category.

Data source: Bali 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 Bali Compares to Other Months

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

This table compares monthly weather conditions in Bali, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	12 mm (0.5 inches)	81%	moderate
February Weather	-6°C (22°F)	16 mm (0.6 inches)	85%	very high
March Weather	1°C (35°F)	31 mm (1.2 inches)	85%	very high
April Weather	6°C (44°F)	64 mm (2.5 inches)	83%	extreme
May Weather	10°C (51°F)	90 mm (3.6 inches)	78%	extreme
June Weather	14°C (57°F)	117 mm (4.6 inches)	80%	extreme
July Weather	16°C (62°F)	116 mm (4.6 inches)	82%	extreme
August Weather	16°C (60°F)	110 mm (4.3 inches)	86%	extreme
September Weather	12°C (54°F)	104 mm (4.1 inches)	87%	extreme
October Weather	6°C (43°F)	86 mm (3.4 inches)	88%	very high
November Weather	-1°C (31°F)	25 mm (1.0 inches)	86%	high
December Weather	-7°C (20°F)	11 mm (0.4 inches)	78%	moderate