September Weather in Ono-hara, Japan

Last updated: August 23, 2025

The average temperature in Ono-hara, Japan during September is a pleasant 24°C (75°F). Expect a minimum of 15°C (60°F) and a maximum of 33°C (92°F). With an average precipitation of 237 mm (9.3 in) spread over 14 days, the month brings a touch of humidity, hovering around an average of 84%.

September Temperature in Ono-hara

In September in Ono-hara, the average temperature is 24°C (75°F). Maximums can reach 33°C (92°F), and minimums can be as low as 15°C (60°F). This makes it an ideal time for travelers seeking warm and pleasant weather.

September Weather in Ono-hara: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ono-hara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ono-hara, September typically has an average temperature of 24°C (75°F), with highs reaching up to 33°C (92°F) and lows dropping to around 15°C (60°F).

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

September Precipitation in Ono-hara

In Ono-hara in September, the precipitation amount is 237 mm (9.3 in), which falls over a span of 14 days.

September Precipitation Trends in Ono-hara

The chart displays monthly precipitation patterns in Ono-hara, 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 Ono-hara, September typically receives around 237 mm (9.3 inches) of precipitation spread over approximately 14 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 Ono-hara

In Ono-hara in September humidity is 84%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making it essential for travelers to stay hydrated and plan outdoor activities for early mornings or late afternoons when the heat is more bearable.

September Average Humidity in Ono-hara

This chart illustrates the average monthly humidity levels in Ono-hara, 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 Ono-hara is approximately 84%, 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 Ono-hara

In Ono-hara 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 Ono-hara.

Maximum UV Index Levels in Ono-hara for September

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

Data source: Ono-hara 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 Ono-hara Compares to Other Months

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

This table compares monthly weather conditions in Ono-hara, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	49 mm (1.9 inches)	76%	moderate
February Weather	6°C (43°F)	69 mm (2.7 inches)	72%	moderate
March Weather	10°C (50°F)	125 mm (4.9 inches)	69%	very high
April Weather	14°C (58°F)	137 mm (5.4 inches)	75%	extreme
May Weather	19°C (66°F)	136 mm (5.4 inches)	84%	extreme
June Weather	22°C (72°F)	181 mm (7.1 inches)	88%	extreme
July Weather	26°C (79°F)	386 mm (15.2 inches)	95%	extreme
August Weather	28°C (82°F)	256 mm (10.1 inches)	93%	extreme
September Weather	24°C (75°F)	237 mm (9.3 inches)	84%	very high
October Weather	19°C (66°F)	172 mm (6.8 inches)	79%	high
November Weather	13°C (55°F)	37 mm (1.5 inches)	76%	high
December Weather	7°C (46°F)	61 mm (2.4 inches)	75%	moderate