September Weather in Suibara, Japan

Last updated: August 23, 2025

In September, the average temperature in Suibara, Japan hovers around 21°C (71°F), creating a pleasant climate for outdoor activities. However, be prepared for a range: temperatures can dip to a cool 10°C (50°F), while soaring up to a steamy 36°C (97°F). Expect 180 mm (7.1 in) of precipitation spread over 18 days, contributing to the region's average humidity of an impressive 89%. Whether you’re exploring the landscape or enjoying local attractions, pack accordingly!

September Temperature in Suibara

In September in Suibara, the average temperature is 21°C (71°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 10°C (50°F). This makes it a great time to travel, as you can enjoy warm days while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Suibara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Suibara, September typically has an average temperature of 21°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Suibara

In Suibara in September, the precipitation amount is 180 mm (7.1 in) over the course of 18 days.

September Precipitation Trends in Suibara

The chart displays monthly precipitation patterns in Suibara, 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 Suibara, September typically receives around 180 mm (7.1 inches) of precipitation spread over approximately 18 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 Suibara

In Suibara in September humidity is 89%. With an average temperature of 21°C (71°F), this humidity feels like walking through a warm, thick blanket, making it a challenge for travelers to remain comfortable while exploring the sights.

September Average Humidity in Suibara

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

In Suibara in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Suibara.

Maximum UV Index Levels in Suibara for September

The chart shows the monthly maximum UV Index (UVI) for Suibara 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 Suibara typically reaches 9, which falls under the very high exposure category.

Data source: Suibara 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 Suibara Compares to Other Months

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

This table compares monthly weather conditions in Suibara, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	184 mm (7.2 inches)	88%	moderate
February Weather	1°C (34°F)	169 mm (6.6 inches)	86%	moderate
March Weather	5°C (42°F)	163 mm (6.4 inches)	81%	high
April Weather	10°C (51°F)	152 mm (6.0 inches)	78%	very high
May Weather	17°C (62°F)	154 mm (6.1 inches)	81%	very high
June Weather	20°C (68°F)	169 mm (6.6 inches)	88%	extreme
July Weather	25°C (77°F)	353 mm (13.9 inches)	92%	extreme
August Weather	26°C (79°F)	280 mm (11.0 inches)	92%	extreme
September Weather	21°C (71°F)	180 mm (7.1 inches)	89%	very high
October Weather	15°C (60°F)	186 mm (7.3 inches)	87%	high
November Weather	9°C (49°F)	161 mm (6.3 inches)	85%	moderate
December Weather	3°C (38°F)	224 mm (8.8 inches)	86%	moderate