September Weather in Ba, Indonesia

Last updated: August 23, 2025

The average temperature in Ba, Indonesia during September is 26°C (80°F), with a comfortable minimum of 24°C (76°F) and a pleasant maximum reaching 28°C (83°F). Expect minimal precipitation, with only 2 mm (0.1 in) occurring over 0 days. The average humidity sits at a moderate 75%, making it a great time to enjoy the outdoors!

September Temperature in Ba

In September in Ba, the average temperature is 26°C (80°F). The maximum can reach 28°C (83°F), while the minimum can be as low as 24°C (76°F). This warmth makes it a perfect time to explore the stunning sights and outdoor activities in Ba.

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

The chart illustrates September temperature patterns in Ba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ba, September typically has an average temperature of 26°C (80°F), with highs reaching up to 28°C (83°F) and lows dropping to around 24°C (76°F).

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

September Precipitation in Ba

In Ba in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Ba

The chart displays monthly precipitation patterns in Ba, 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 Ba, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Ba

In Ba in September humidity is 75%. With an average temperature of 26°C (80°F), this humidity feels like a warm, muggy embrace, making travel a bit sticky and uncomfortable but also inviting you to slow down and savor the local culture in shaded cafes and breezy spots by the water.

September Average Humidity in Ba

This chart illustrates the average monthly humidity levels in Ba, 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 Ba is approximately 75%, 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 Ba

In Ba 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 Ba.

Maximum UV Index Levels in Ba for September

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

Data source: Ba 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 Ba Compares to Other Months

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

This table compares monthly weather conditions in Ba, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	240 mm (9.4 inches)	77%	extreme
February Weather	28°C (82°F)	204 mm (8.0 inches)	81%	extreme
March Weather	28°C (82°F)	172 mm (6.8 inches)	81%	extreme
April Weather	28°C (83°F)	145 mm (5.7 inches)	79%	extreme
May Weather	28°C (82°F)	26 mm (1.0 inches)	79%	extreme
June Weather	27°C (81°F)	7 mm (0.3 inches)	75%	very high
July Weather	26°C (79°F)	4 mm (0.2 inches)	72%	extreme
August Weather	26°C (79°F)	5 mm (0.2 inches)	75%	extreme
September Weather	26°C (80°F)	2 mm (0.1 inches)	75%	extreme
October Weather	27°C (81°F)	7 mm (0.3 inches)	75%	extreme
November Weather	28°C (83°F)	44 mm (1.7 inches)	73%	extreme
December Weather	28°C (83°F)	172 mm (6.8 inches)	72%	extreme