September Weather in Waru, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Waru, Indonesia reaches a warm 27°C (81°F). Expect a minimum of 23°C (74°F) and a maximum of 33°C (91°F), making it a delightful time to enjoy the outdoors. However, be prepared for some rain, with precipitation measuring 192 mm (7.6 in) over 20 days, and anticipate a high average humidity of 84%.

September Temperature in Waru

In September in Waru, the average temperature is 27°C (81°F), with maximums reaching 33°C (91°F) and minimums dropping to 23°C (74°F). This mild climate makes it a perfect time for outdoor adventures and exploration.

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

The chart illustrates September temperature patterns in Waru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waru, September typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (91°F) and lows dropping to around 23°C (74°F).

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

September Precipitation in Waru

In Waru in September, the total precipitation amount is 192 mm (7.6 in) over a span of 20 days.

September Precipitation Trends in Waru

The chart displays monthly precipitation patterns in Waru, 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 Waru, September typically receives around 192 mm (7.6 inches) of precipitation spread over approximately 20 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 Waru

In Waru in September humidity is 84%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, moist blanket, making travel uncomfortable and sticky, as every step seems to weigh you down with the heavy air.

September Average Humidity in Waru

This chart illustrates the average monthly humidity levels in Waru, 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 Waru is approximately 84%, 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 Waru

In Waru 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 Waru, you can check here.

Maximum UV Index Levels in Waru for September

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

Data source: Waru 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 Waru Compares to Other Months

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

This table compares monthly weather conditions in Waru, 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)	238 mm (9.4 inches)	88%	extreme
February Weather	27°C (82°F)	239 mm (9.4 inches)	87%	extreme
March Weather	27°C (82°F)	349 mm (13.7 inches)	88%	extreme
April Weather	28°C (82°F)	318 mm (12.5 inches)	86%	extreme
May Weather	28°C (82°F)	253 mm (10.0 inches)	84%	extreme
June Weather	27°C (81°F)	232 mm (9.1 inches)	85%	extreme
July Weather	27°C (81°F)	182 mm (7.2 inches)	86%	extreme
August Weather	27°C (81°F)	168 mm (6.6 inches)	87%	extreme
September Weather	27°C (81°F)	192 mm (7.6 inches)	84%	extreme
October Weather	28°C (82°F)	221 mm (8.7 inches)	84%	extreme
November Weather	28°C (82°F)	253 mm (10.0 inches)	84%	extreme
December Weather	28°C (82°F)	241 mm (9.5 inches)	85%	extreme