September Weather in Chuo, Japan

Last updated: August 23, 2025

In September, the average temperature in Chuo, Japan hovers around 19°C (66°F), offering a pleasant climate. Expect a minimum of 9°C (49°F) and a potential maximum of 31°C (89°F), providing a wide range for outdoor activities. However, be prepared for precipitation with 240 mm (9.5 in) over 21 days, all while enjoying an average humidity of 86%.

September Temperature in Chuo

In September in Chuo, the average temperature is 19°C (66°F). Maximums can reach 31°C (89°F), while minimums can drop as low as 9°C (49°F). This diverse temperature range makes Chuo an ideal destination for travelers seeking both warm and cool experiences.

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

The chart illustrates September temperature patterns in Chuo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chuo, September typically has an average temperature of 19°C (66°F), with highs reaching up to 31°C (89°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Chuo

In Chuo in September, the total precipitation amount is 240 mm (9.5 in) spread over 21 days.

September Precipitation Trends in Chuo

The chart displays monthly precipitation patterns in Chuo, 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 Chuo, September typically receives around 240 mm (9.5 inches) of precipitation spread over approximately 21 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 Chuo

In Chuo in September, humidity is 86%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel slightly uncomfortable as the air feels heavy and sticking to your skin.

September Average Humidity in Chuo

This chart illustrates the average monthly humidity levels in Chuo, 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 Chuo is approximately 86%, 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 Chuo

In Chuo in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chuo.

Maximum UV Index Levels in Chuo for September

The chart shows the monthly maximum UV Index (UVI) for Chuo 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 Chuo typically reaches 10, which falls under the very high exposure category.

Data source: Chuo 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 Chuo Compares to Other Months

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

This table compares monthly weather conditions in Chuo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	59 mm (2.3 inches)	76%	moderate
February Weather	1°C (34°F)	76 mm (3.0 inches)	74%	high
March Weather	5°C (42°F)	182 mm (7.2 inches)	70%	very high
April Weather	9°C (49°F)	177 mm (7.0 inches)	74%	very high
May Weather	15°C (58°F)	182 mm (7.1 inches)	81%	extreme
June Weather	18°C (64°F)	218 mm (8.6 inches)	88%	extreme
July Weather	22°C (71°F)	412 mm (16.2 inches)	93%	extreme
August Weather	23°C (74°F)	216 mm (8.5 inches)	90%	extreme
September Weather	19°C (66°F)	240 mm (9.5 inches)	86%	very high
October Weather	14°C (57°F)	345 mm (13.6 inches)	83%	high
November Weather	8°C (46°F)	78 mm (3.1 inches)	80%	high
December Weather	2°C (36°F)	70 mm (2.8 inches)	78%	moderate