September Weather in Harian, Indonesia

Last updated: August 23, 2025

In Harian, Indonesia, the average temperature in September hovers around 21°C (69°F), with a minimum of 17°C (62°F) and a pleasant maximum of 27°C (81°F). Expect 228 mm (9.0 in) of precipitation spread over 24 days, contributing to an invigorating atmosphere with an average humidity of 89%. Stay prepared for a mix of warm days and refreshing showers!

September Temperature in Harian

In September in Harian, the average temperature is 21°C (69°F). Maximums can reach 27°C (81°F), while minimums can dip to as low as 17°C (62°F). This delightful weather makes it a perfect time for travelers to explore and enjoy outdoor activities in Harian.

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

The chart illustrates September temperature patterns in Harian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harian, September typically has an average temperature of 21°C (69°F), with highs reaching up to 27°C (81°F) and lows dropping to around 17°C (62°F).

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

September Precipitation in Harian

In Harian in September, the total precipitation amount is 228 mm (9.0 in) spread over 24 days.

September Precipitation Trends in Harian

The chart displays monthly precipitation patterns in Harian, 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 Harian, September typically receives around 228 mm (9.0 inches) of precipitation spread over approximately 24 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 Harian

In Harian in September, humidity is 89%. With an average temperature of 21°C (69°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky and requiring frequent breaks to cool off and stay hydrated.

September Average Humidity in Harian

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

In Harian in September, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Harian.

Maximum UV Index Levels in Harian for September

The chart shows the monthly maximum UV Index (UVI) for Harian 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 Harian typically reaches 16, which falls under the extreme exposure category.

Data source: Harian 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 Harian Compares to Other Months

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

This table compares monthly weather conditions in Harian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (69°F)	156 mm (6.1 inches)	83%	extreme
February Weather	21°C (70°F)	132 mm (5.2 inches)	74%	extreme
March Weather	21°C (71°F)	171 mm (6.7 inches)	74%	extreme
April Weather	21°C (71°F)	209 mm (8.2 inches)	77%	extreme
May Weather	22°C (71°F)	197 mm (7.8 inches)	82%	extreme
June Weather	21°C (71°F)	138 mm (5.4 inches)	85%	extreme
July Weather	21°C (70°F)	115 mm (4.5 inches)	84%	extreme
August Weather	21°C (70°F)	138 mm (5.4 inches)	87%	extreme
September Weather	21°C (69°F)	228 mm (9.0 inches)	89%	extreme
October Weather	21°C (69°F)	195 mm (7.7 inches)	89%	extreme
November Weather	21°C (69°F)	327 mm (12.9 inches)	88%	extreme
December Weather	21°C (69°F)	261 mm (10.3 inches)	88%	extreme