September Weather in Billa, Indonesia

Last updated: August 23, 2025

In Billa, Indonesia, the average temperature in September is a pleasant 25°C (77°F). Expect minimums to dip to 19°C (66°F) and maximums to reach 30°C (87°F). During this period, precipitation averages around 12 mm (0.5 in) over 3 days, accompanied by a relatively high humidity of 77%.

September Temperature in Billa

In September in Billa, the average temperature is 25°C (77°F), with a maximum reaching 30°C (87°F) and a minimum dropping to as low as 19°C (66°F). This pleasant climate makes it an ideal time for travel and outdoor activities.

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

The chart illustrates September temperature patterns in Billa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Billa, September typically has an average temperature of 25°C (77°F), with highs reaching up to 30°C (87°F) and lows dropping to around 19°C (66°F).

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

September Precipitation in Billa

In Billa in September, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

September Precipitation Trends in Billa

The chart displays monthly precipitation patterns in Billa, 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 Billa, September typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 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 Billa

In Billa in September, humidity is 77%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly heavy but still pleasant, as long as you stay hydrated and take frequent breaks in the shade.

September Average Humidity in Billa

This chart illustrates the average monthly humidity levels in Billa, 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 Billa is approximately 77%, 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 Billa

In Billa 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 Billa.

Maximum UV Index Levels in Billa for September

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

Data source: Billa 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 Billa Compares to Other Months

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

This table compares monthly weather conditions in Billa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	329 mm (12.9 inches)	77%	extreme
February Weather	25°C (78°F)	233 mm (9.2 inches)	81%	extreme
March Weather	26°C (78°F)	255 mm (10.0 inches)	81%	extreme
April Weather	26°C (79°F)	153 mm (6.0 inches)	79%	extreme
May Weather	26°C (79°F)	36 mm (1.4 inches)	79%	extreme
June Weather	25°C (77°F)	11 mm (0.4 inches)	75%	very high
July Weather	24°C (76°F)	7 mm (0.3 inches)	74%	extreme
August Weather	24°C (76°F)	12 mm (0.5 inches)	77%	extreme
September Weather	25°C (77°F)	12 mm (0.5 inches)	77%	extreme
October Weather	25°C (78°F)	89 mm (3.5 inches)	77%	extreme
November Weather	26°C (79°F)	257 mm (10.1 inches)	74%	extreme
December Weather	26°C (79°F)	314 mm (12.4 inches)	72%	extreme