September Weather in Banda Aceh, Indonesia

Last updated: August 23, 2025

In Banda Aceh, Indonesia, the average temperature in September hovers around 27°C (80°F). Expect a comfortable minimum of 23°C (75°F) and a warm maximum reaching 32°C (90°F). Rainfall is quite significant, with an average precipitation of 228 mm (9.0 in) spread over 19 days. Adding to the tropical vibe, the average humidity sits at a muggy 86%.

September Temperature in Banda Aceh

In September in Banda Aceh, the average temperature is 27°C (80°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 23°C (75°F). This mild and pleasantly warm weather makes it an ideal time for travelers to enjoy outdoor activities and explore the local attractions.

September Weather in Banda Aceh: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Banda Aceh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Banda Aceh, September typically has an average temperature of 27°C (80°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (75°F).

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

September Precipitation in Banda Aceh

In Banda Aceh in September, the precipitation amount is 228 mm (9.0 in) over the course of 19 days.

September Precipitation Trends in Banda Aceh

The chart displays monthly precipitation patterns in Banda Aceh, 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 Banda Aceh, September typically receives around 228 mm (9.0 inches) of precipitation spread over approximately 19 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 Banda Aceh

In Banda Aceh in September, humidity is 86%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky blanket enveloping you, making travel feel heavy and exhausting as you navigate the sultry air.

September Average Humidity in Banda Aceh

This chart illustrates the average monthly humidity levels in Banda Aceh, 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 Banda Aceh 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 Banda Aceh

In Banda Aceh 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 Banda Aceh, you can check here.

Maximum UV Index Levels in Banda Aceh for September

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

Data source: Banda Aceh 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 Banda Aceh Compares to Other Months

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

This table compares monthly weather conditions in Banda Aceh, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	184 mm (7.3 inches)	80%	extreme
February Weather	27°C (80°F)	77 mm (3.0 inches)	73%	extreme
March Weather	27°C (81°F)	152 mm (6.0 inches)	74%	extreme
April Weather	27°C (81°F)	233 mm (9.2 inches)	69%	extreme
May Weather	27°C (81°F)	353 mm (13.9 inches)	75%	extreme
June Weather	27°C (82°F)	124 mm (4.9 inches)	81%	extreme
July Weather	27°C (82°F)	152 mm (6.0 inches)	79%	extreme
August Weather	27°C (81°F)	158 mm (6.2 inches)	84%	extreme
September Weather	27°C (80°F)	228 mm (9.0 inches)	86%	extreme
October Weather	26°C (80°F)	312 mm (12.3 inches)	86%	extreme
November Weather	26°C (79°F)	450 mm (17.7 inches)	86%	extreme
December Weather	26°C (79°F)	278 mm (11.0 inches)	86%	extreme