September Weather in Simu, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Simu, Indonesia is a pleasant 25°C (78°F), with minimums hitting 21°C (70°F) and maximums reaching up to 30°C (87°F). Visitors can expect about 29 mm (1.2 in) of precipitation spread over 12 days. With an average humidity of 68%, this locale offers a comfortable climate perfect for exploration.

September Temperature in Simu

In September in Simu, the average temperature is 25°C (78°F). The maximum can reach 30°C (87°F), while the minimum can be as low as 21°C (70°F). It’s an ideal time for travelers seeking pleasant weather and outdoor adventures.

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

The chart illustrates September temperature patterns in Simu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Simu, September typically has an average temperature of 25°C (78°F), with highs reaching up to 30°C (87°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Simu

In Simu in September, the precipitation amount is 29 mm (1.2 in) over the course of 12 days.

September Precipitation Trends in Simu

The chart displays monthly precipitation patterns in Simu, 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 Simu, September typically receives around 29 mm (1.2 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 Simu

In Simu in September, humidity is 68%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel a bit more intense and sticky, but still manageable for traveling if you stay hydrated and take breaks in the shade.

September Average Humidity in Simu

This chart illustrates the average monthly humidity levels in Simu, 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 Simu 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 Simu

In Simu 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 Simu.

Maximum UV Index Levels in Simu for September

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

Data source: Simu 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 Simu Compares to Other Months

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

This table compares monthly weather conditions in Simu, 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)	253 mm (10.0 inches)	81%	extreme
February Weather	26°C (80°F)	284 mm (11.2 inches)	86%	extreme
March Weather	27°C (80°F)	240 mm (9.5 inches)	86%	extreme
April Weather	27°C (80°F)	121 mm (4.8 inches)	83%	extreme
May Weather	26°C (80°F)	66 mm (2.6 inches)	83%	extreme
June Weather	25°C (78°F)	53 mm (2.1 inches)	80%	very high
July Weather	25°C (77°F)	35 mm (1.4 inches)	75%	extreme
August Weather	25°C (77°F)	34 mm (1.3 inches)	71%	extreme
September Weather	25°C (78°F)	29 mm (1.2 inches)	68%	extreme
October Weather	27°C (80°F)	47 mm (1.8 inches)	68%	extreme
November Weather	27°C (81°F)	159 mm (6.3 inches)	71%	extreme
December Weather	27°C (81°F)	209 mm (8.2 inches)	76%	extreme