September Weather in Yamatokoriyama, Japan

Last updated: August 23, 2025

In September, the average temperature in Yamatokoriyama, Japan hovers around 24°C (75°F). Expect a range of temperatures with a minimum of 12°C (53°F) and a potential maximum of 36°C (97°F). Be prepared for 181 mm (7.1 in) of precipitation over approximately 16 days, all while enjoying an average humidity of 87%.

September Temperature in Yamatokoriyama

In September in Yamatokoriyama, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), and minimums can be as low as 12°C (53°F). This makes Yamatokoriyama an ideal destination for travelers looking to enjoy warm weather while still having the option for cooler excursions.

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

The chart illustrates September temperature patterns in Yamatokoriyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamatokoriyama, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Yamatokoriyama

In Yamatokoriyama in September, the total precipitation amount is 181 mm (7.1 in) over a period of 16 days.

September Precipitation Trends in Yamatokoriyama

The chart displays monthly precipitation patterns in Yamatokoriyama, 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 Yamatokoriyama, September typically receives around 181 mm (7.1 inches) of precipitation spread over approximately 16 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 Yamatokoriyama

In Yamatokoriyama in September, humidity is 87%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace that clings to your skin, making outdoor activities feel heavier and more exhausting, and the air thickens, leaving you longing for shade and refreshing breezes as you navigate your adventures.

September Average Humidity in Yamatokoriyama

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

In Yamatokoriyama 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 Yamatokoriyama.

Maximum UV Index Levels in Yamatokoriyama for September

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

Data source: Yamatokoriyama 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 Yamatokoriyama Compares to Other Months

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

This table compares monthly weather conditions in Yamatokoriyama, 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 (40°F)	60 mm (2.4 inches)	82%	moderate
February Weather	5°C (41°F)	73 mm (2.9 inches)	79%	high
March Weather	9°C (49°F)	128 mm (5.1 inches)	74%	very high
April Weather	14°C (57°F)	131 mm (5.1 inches)	76%	extreme
May Weather	19°C (66°F)	157 mm (6.2 inches)	83%	extreme
June Weather	22°C (72°F)	192 mm (7.6 inches)	87%	extreme
July Weather	26°C (80°F)	290 mm (11.4 inches)	93%	extreme
August Weather	28°C (83°F)	174 mm (6.8 inches)	91%	extreme
September Weather	24°C (75°F)	181 mm (7.1 inches)	87%	very high
October Weather	18°C (64°F)	268 mm (10.6 inches)	85%	high
November Weather	12°C (53°F)	51 mm (2.0 inches)	83%	high
December Weather	6°C (44°F)	70 mm (2.8 inches)	83%	moderate