September Weather in Astambul, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Astambul, Indonesia is a warm 27°C (82°F), with minimums dropping to 22°C (71°F) and highs soaring up to 36°C (96°F). This month experiences 71 mm (2.8 in) of precipitation spread across approximately 12 days, resulting in an average humidity level of 79%. Ideal for those who enjoy a tropical climate, Astambul offers a delightful blend of warmth and moisture.

September Temperature in Astambul

In September in Astambul, the average temperature is 27°C (82°F), with maximums reaching 36°C (96°F) and minimums dropping to as low as 22°C (71°F). It's a perfect time to enjoy outdoor activities while ensuring you stay hydrated and protected from the sun.

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

The chart illustrates September temperature patterns in Astambul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Astambul, September typically has an average temperature of 27°C (82°F), with highs reaching up to 36°C (96°F) and lows dropping to around 22°C (71°F).

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

September Precipitation in Astambul

In Astambul in September, the precipitation amount is 71 mm (2.8 in) during a total of 12 days.

September Precipitation Trends in Astambul

The chart displays monthly precipitation patterns in Astambul, 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 Astambul, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 12 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 Astambul

In Astambul in September humidity is 79%. With an average temperature of 27°C (82°F), this humidity feels like traveling through a warm, thick blanket, making every step feel heavier and more exhausting, while the air clings to your skin, reminding you to stay hydrated and take frequent breaks in the shade.

September Average Humidity in Astambul

This chart illustrates the average monthly humidity levels in Astambul, 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 Astambul is approximately 79%, 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 Astambul

In Astambul 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 Astambul, you can check here.

Maximum UV Index Levels in Astambul for September

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

Data source: Astambul 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 Astambul Compares to Other Months

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

This table compares monthly weather conditions in Astambul, 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 (80°F)	246 mm (9.7 inches)	87%	extreme
February Weather	27°C (81°F)	214 mm (8.4 inches)	87%	extreme
March Weather	27°C (81°F)	272 mm (10.7 inches)	88%	extreme
April Weather	27°C (82°F)	215 mm (8.5 inches)	87%	extreme
May Weather	28°C (82°F)	137 mm (5.4 inches)	85%	extreme
June Weather	27°C (81°F)	103 mm (4.0 inches)	87%	extreme
July Weather	27°C (80°F)	69 mm (2.7 inches)	87%	extreme
August Weather	27°C (81°F)	57 mm (2.2 inches)	86%	extreme
September Weather	27°C (82°F)	71 mm (2.8 inches)	79%	extreme
October Weather	28°C (83°F)	96 mm (3.8 inches)	78%	extreme
November Weather	28°C (82°F)	217 mm (8.5 inches)	81%	extreme
December Weather	27°C (81°F)	266 mm (10.5 inches)	85%	extreme