September Weather in Nishiawakura, Japan

Last updated: August 23, 2025

In September, the average temperature in Nishiawakura, Japan hovers around 21°C (70°F). Visitors can expect a minimum of 11°C (51°F) and a maximum of 32°C (90°F). With precipitation averaging 269 mm (10.6 in) across 17 days, it's wise to pack an umbrella. The air is quite humid, with average levels reaching 87%.

September Temperature in Nishiawakura

In September in Nishiawakura, the average temperature is 21°C (70°F). Maximums can reach 32°C (90°F) and minimums can be as low as 11°C (51°F). It’s a great time to visit for pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Nishiawakura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nishiawakura, September typically has an average temperature of 21°C (70°F), with highs reaching up to 32°C (90°F) and lows dropping to around 11°C (51°F).

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

September Precipitation in Nishiawakura

In Nishiawakura in September, the precipitation amount is 269 mm (10.6 in) over a span of 17 days.

September Precipitation Trends in Nishiawakura

The chart displays monthly precipitation patterns in Nishiawakura, 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 Nishiawakura, September typically receives around 269 mm (10.6 inches) of precipitation spread over approximately 17 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 Nishiawakura

In Nishiawakura in September humidity is 87%. With an average temperature of 21°C (70°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite exhausting and requiring frequent breaks to hydrate and cool off.

September Average Humidity in Nishiawakura

This chart illustrates the average monthly humidity levels in Nishiawakura, 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 Nishiawakura is approximately 87%, 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 Nishiawakura

In Nishiawakura 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 Nishiawakura.

Maximum UV Index Levels in Nishiawakura for September

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

Data source: Nishiawakura 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 Nishiawakura Compares to Other Months

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

This table compares monthly weather conditions in Nishiawakura, 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 (35°F)	81 mm (3.2 inches)	82%	moderate
February Weather	2°C (36°F)	87 mm (3.4 inches)	79%	high
March Weather	7°C (44°F)	144 mm (5.7 inches)	73%	very high
April Weather	11°C (53°F)	139 mm (5.5 inches)	74%	extreme
May Weather	17°C (62°F)	139 mm (5.5 inches)	84%	extreme
June Weather	20°C (68°F)	220 mm (8.6 inches)	86%	extreme
July Weather	24°C (76°F)	384 mm (15.1 inches)	92%	extreme
August Weather	26°C (79°F)	308 mm (12.1 inches)	92%	extreme
September Weather	21°C (70°F)	269 mm (10.6 inches)	87%	very high
October Weather	16°C (60°F)	224 mm (8.8 inches)	85%	high
November Weather	9°C (49°F)	62 mm (2.4 inches)	84%	moderate
December Weather	4°C (39°F)	108 mm (4.3 inches)	82%	moderate