September Weather in Sumber, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Sumber, Indonesia is a warm 27°C (80°F), with minimums dipping to 22°C (71°F) and highs reaching up to 31°C (89°F). Expect about 22 mm (0.8 in) of precipitation over 4 days, accompanied by an average humidity level of 72%. Whether you're enjoying the sun or the occasional rain, it's a delightful time to experience the climate!

September Temperature in Sumber

In September in Sumber, the average temperature is 27°C (80°F). The maximum can reach 31°C (89°F), and the minimum can be as low as 22°C (71°F). This pleasant climate makes Sumber an ideal destination for travelers looking to enjoy mild temperatures and outdoor activities.

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

The chart illustrates September temperature patterns in Sumber, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumber, September typically has an average temperature of 27°C (80°F), with highs reaching up to 31°C (89°F) and lows dropping to around 22°C (71°F).

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

September Precipitation in Sumber

In Sumber in September, the total precipitation amount is 22 mm (0.8 in) spread over a duration of 4 days.

September Precipitation Trends in Sumber

The chart displays monthly precipitation patterns in Sumber, 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 Sumber, September typically receives around 22 mm (0.8 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sumber

In Sumber in September humidity is 72%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace that can make outdoor activities exhausting and often requires frequent breaks in the shade for travelers to stay comfortable.

September Average Humidity in Sumber

This chart illustrates the average monthly humidity levels in Sumber, 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 Sumber is approximately 72%, 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 Sumber

In Sumber 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 Sumber, you can check here.

Maximum UV Index Levels in Sumber for September

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

Data source: Sumber 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 Sumber Compares to Other Months

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

This table compares monthly weather conditions in Sumber, 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 (79°F)	322 mm (12.7 inches)	84%	extreme
February Weather	26°C (79°F)	359 mm (14.1 inches)	87%	extreme
March Weather	26°C (80°F)	368 mm (14.5 inches)	85%	extreme
April Weather	27°C (80°F)	227 mm (9.0 inches)	82%	extreme
May Weather	27°C (81°F)	110 mm (4.3 inches)	81%	extreme
June Weather	27°C (80°F)	47 mm (1.9 inches)	81%	very high
July Weather	26°C (79°F)	15 mm (0.6 inches)	79%	extreme
August Weather	26°C (79°F)	9 mm (0.4 inches)	76%	extreme
September Weather	27°C (80°F)	22 mm (0.8 inches)	72%	extreme
October Weather	27°C (81°F)	64 mm (2.5 inches)	74%	extreme
November Weather	27°C (81°F)	232 mm (9.1 inches)	78%	extreme
December Weather	26°C (80°F)	328 mm (12.9 inches)	78%	extreme