September Weather in Sondi, Indonesia

Last updated: August 23, 2025

In Sondi, Indonesia, the average temperature in September hovers around 22°C (73°F). Expect a cozy climate with minimums of 18°C (64°F) and maximums reaching up to 30°C (86°F). Be prepared for a wet month, as precipitation totals about 285 mm (11.2 in) over 28 days, accompanied by a high average humidity of 89%.

September Temperature in Sondi

In September in Sondi, the average temperature is 22°C (73°F), with maximums reaching 30°C (86°F) and minimums descending to 18°C (64°F). This is an ideal time for travelers to enjoy pleasant weather while exploring the attractions of Sondi.

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

The chart illustrates September temperature patterns in Sondi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sondi, September typically has an average temperature of 22°C (73°F), with highs reaching up to 30°C (86°F) and lows dropping to around 18°C (64°F).

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

September Precipitation in Sondi

In Sondi in September, the total precipitation amount is 285 mm (11.2 in) spread over the course of 28 days.

September Precipitation Trends in Sondi

The chart displays monthly precipitation patterns in Sondi, 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 Sondi, September typically receives around 285 mm (11.2 inches) of precipitation spread over approximately 28 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 Sondi

In Sondi in September humidity is 89%. With average temperature 22°C (73°F), this humidity feels like a warm, steamy embrace that clings to your skin, making traveling somewhat uncomfortable as you navigate the thick air and perspiration.

September Average Humidity in Sondi

This chart illustrates the average monthly humidity levels in Sondi, 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 Sondi is approximately 89%, 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 Sondi

In Sondi 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 Sondi.

Maximum UV Index Levels in Sondi for September

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

Data source: Sondi 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 Sondi Compares to Other Months

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

This table compares monthly weather conditions in Sondi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	173 mm (6.8 inches)	83%	extreme
February Weather	22°C (73°F)	145 mm (5.7 inches)	74%	extreme
March Weather	23°C (73°F)	162 mm (6.4 inches)	74%	extreme
April Weather	23°C (74°F)	217 mm (8.5 inches)	77%	extreme
May Weather	23°C (74°F)	264 mm (10.4 inches)	82%	extreme
June Weather	23°C (74°F)	210 mm (8.3 inches)	85%	extreme
July Weather	23°C (73°F)	171 mm (6.7 inches)	84%	extreme
August Weather	23°C (73°F)	192 mm (7.6 inches)	87%	extreme
September Weather	22°C (73°F)	285 mm (11.2 inches)	89%	extreme
October Weather	22°C (73°F)	249 mm (9.8 inches)	89%	extreme
November Weather	22°C (72°F)	376 mm (14.8 inches)	88%	extreme
December Weather	22°C (72°F)	300 mm (11.8 inches)	88%	extreme