September Weather in Ongko, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Ongko, Indonesia is a pleasant 26°C (78°F). Expect minimums around 23°C (75°F) and highs of 28°C (83°F). You'll encounter an average precipitation of 25 mm (1.0 in) over about 10 days, with humidity levels sitting at a comfortable 68%.

September Temperature in Ongko

In September in Ongko, the average temperature is 26°C (78°F), with a maximum reaching 28°C (83°F) and a minimum that can drop to 23°C (75°F). This mild climate makes it an ideal destination for travelers looking to enjoy pleasant weather.

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

The chart illustrates September temperature patterns in Ongko, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ongko, September typically has an average temperature of 26°C (78°F), with highs reaching up to 28°C (83°F) and lows dropping to around 23°C (75°F).

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

September Precipitation in Ongko

In Ongko in September, the total precipitation amount is 25 mm (1.0 in) spread over a duration of 10 days.

September Precipitation Trends in Ongko

The chart displays monthly precipitation patterns in Ongko, 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 Ongko, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 10 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 Ongko

In Ongko in September, humidity is 68%. With an average temperature of 26°C (78°F), this humidity feels like a warm, sticky embrace, making outdoor activities challenging but the lush greenery inviting.

September Average Humidity in Ongko

This chart illustrates the average monthly humidity levels in Ongko, 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 Ongko is approximately 68%, 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 Ongko

In Ongko 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 Ongko.

Maximum UV Index Levels in Ongko for September

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

Data source: Ongko 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 Ongko Compares to Other Months

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

This table compares monthly weather conditions in Ongko, 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 (81°F)	122 mm (4.8 inches)	81%	extreme
February Weather	27°C (81°F)	171 mm (6.7 inches)	86%	extreme
March Weather	27°C (81°F)	122 mm (4.8 inches)	86%	extreme
April Weather	28°C (82°F)	86 mm (3.4 inches)	83%	extreme
May Weather	27°C (81°F)	46 mm (1.8 inches)	83%	extreme
June Weather	26°C (79°F)	36 mm (1.4 inches)	80%	very high
July Weather	25°C (78°F)	22 mm (0.9 inches)	75%	extreme
August Weather	25°C (78°F)	25 mm (1.0 inches)	71%	extreme
September Weather	26°C (78°F)	25 mm (1.0 inches)	68%	extreme
October Weather	27°C (80°F)	36 mm (1.4 inches)	68%	extreme
November Weather	27°C (82°F)	116 mm (4.6 inches)	71%	extreme
December Weather	28°C (82°F)	146 mm (5.7 inches)	76%	extreme