September Weather in Binjai, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Binjai, Indonesia is a warm 26°C (79°F). Expect a comfortable minimum of 20°C (69°F) and the occasional high of 36°C (97°F). However, be prepared for frequent rainfall, with an average precipitation of 313 mm (12.3 in) spread over 28 days. With an average humidity of 89%, it's a perfect time for those who enjoy a tropical climate!

September Temperature in Binjai

In September in Binjai, the average temperature is 26°C (79°F). Maximums can reach 36°C (97°F), while minimums can be as low as 20°C (69°F). This makes it an ideal time for travelers seeking warm weather and pleasant conditions.

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

The chart illustrates September temperature patterns in Binjai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Binjai, September typically has an average temperature of 26°C (79°F), with highs reaching up to 36°C (97°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Binjai

In Binjai in September, the precipitation amount is 313 mm (12.3 in) during a span of 28 days.

September Precipitation Trends in Binjai

The chart displays monthly precipitation patterns in Binjai, 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 Binjai, September typically receives around 313 mm (12.3 inches) of precipitation spread over approximately 28 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 Binjai

In Binjai in September, humidity is 89%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, thick blanket, making it feel much hotter and more exhausting for traveling, as every step seems to weigh you down in the muggy air.

September Average Humidity in Binjai

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

In Binjai 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 Binjai, you can check here.

Maximum UV Index Levels in Binjai for September

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

Data source: Binjai 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 Binjai Compares to Other Months

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

This table compares monthly weather conditions in Binjai, 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 (78°F)	197 mm (7.7 inches)	83%	extreme
February Weather	26°C (79°F)	146 mm (5.8 inches)	74%	extreme
March Weather	26°C (80°F)	195 mm (7.7 inches)	74%	extreme
April Weather	27°C (80°F)	239 mm (9.4 inches)	77%	extreme
May Weather	27°C (80°F)	325 mm (12.8 inches)	82%	extreme
June Weather	27°C (80°F)	196 mm (7.7 inches)	85%	extreme
July Weather	26°C (80°F)	174 mm (6.9 inches)	84%	extreme
August Weather	26°C (80°F)	203 mm (8.0 inches)	87%	extreme
September Weather	26°C (79°F)	313 mm (12.3 inches)	89%	extreme
October Weather	26°C (79°F)	319 mm (12.6 inches)	89%	extreme
November Weather	26°C (78°F)	364 mm (14.3 inches)	88%	extreme
December Weather	25°C (78°F)	355 mm (14.0 inches)	88%	extreme