September Weather in Kami, Japan

Last updated: August 23, 2025

In Kami, Japan, the average temperature in September reaches a pleasant 23°C (73°F). Visitors can expect a range of 11°C (52°F) to 32°C (90°F), making it essential to pack accordingly. With an average precipitation of 284 mm (11.2 in) spread over 19 days, bringing an umbrella might be wise. Additionally, the air is quite humid, with an average humidity level of 85%, contributing to the region's lush greenery and vibrant atmosphere.

September Temperature in Kami

In September in Kami, the average temperature is 23°C (73°F), with maximums reaching up to 32°C (90°F) and minimums dipping as low as 11°C (52°F). This mild climate makes Kami an ideal destination for travelers seeking pleasant weather and outdoor activities during this time of year.

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

The chart illustrates September temperature patterns in Kami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kami, September typically has an average temperature of 23°C (73°F), with highs reaching up to 32°C (90°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Kami

In Kami in September, the precipitation amount is 284 mm (11.2 in) spread over 19 days.

September Precipitation Trends in Kami

The chart displays monthly precipitation patterns in Kami, 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 Kami, September typically receives around 284 mm (11.2 inches) of precipitation spread over approximately 19 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 Kami

In Kami in September, humidity is 85%. With an average temperature of 23°C (73°F), this humidity feels like a warm, enveloping blanket, making outdoor activities a bit strenuous and prompting frequent breaks for hydration.

September Average Humidity in Kami

This chart illustrates the average monthly humidity levels in Kami, 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 Kami is approximately 85%, 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 Kami

In Kami 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 Kami.

Maximum UV Index Levels in Kami for September

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

Data source: Kami 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 Kami Compares to Other Months

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

This table compares monthly weather conditions in Kami, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	55 mm (2.2 inches)	74%	moderate
February Weather	5°C (41°F)	87 mm (3.4 inches)	70%	high
March Weather	9°C (48°F)	139 mm (5.5 inches)	70%	very high
April Weather	13°C (56°F)	158 mm (6.2 inches)	76%	extreme
May Weather	18°C (64°F)	196 mm (7.7 inches)	82%	extreme
June Weather	21°C (70°F)	270 mm (10.6 inches)	86%	extreme
July Weather	25°C (77°F)	496 mm (19.5 inches)	91%	extreme
August Weather	26°C (79°F)	270 mm (10.6 inches)	88%	extreme
September Weather	23°C (73°F)	284 mm (11.2 inches)	85%	very high
October Weather	17°C (63°F)	274 mm (10.8 inches)	82%	high
November Weather	11°C (52°F)	64 mm (2.5 inches)	79%	high
December Weather	6°C (43°F)	70 mm (2.8 inches)	77%	moderate