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September Weather in Tono, Japan

Last updated: August 23, 2025

In September, the average temperature in Tono, Japan hovers around 19°C (67°F). Expect a minimum of 5°C (41°F) and a maximum of 32°C (90°F), offering a pleasant range for visitors. However, be prepared for some rain, as 138 mm (5.4 in) of precipitation is typically spread over 14 days. With an average humidity of 86%, the climate is sure to keep things feeling a bit tropical!

September Temperature in Tono

In September, in Tono, the average temperature is 19°C (67°F). The maximum can reach 32°C (90°F), while the minimum can drop to as low as 5°C (41°F). Be prepared for a range of temperatures to ensure a comfortable travel experience.

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

The chart illustrates September temperature patterns in Tono, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tono, September typically has an average temperature of 19°C (67°F), with highs reaching up to 32°C (90°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec303139475864717366564434
Data source: Temperature data for Tono generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Tono

In Tono in September, the total precipitation amount is 138 mm (5.4 in) over a span of 14 days.

September Precipitation Trends in Tono

The chart displays monthly precipitation patterns in Tono, 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 Tono, September typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec47601141201151321821801381825369
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tono

In Tono in September humidity is 86%. With an average temperature of 19°C (67°F), this humidity feels like traveling through a thick, warm blanket, making the air feel heavy and sticky, which can be quite uncomfortable for outdoor activities.

September Average Humidity in Tono

This chart illustrates the average monthly humidity levels in Tono, 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 Tono is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tono

In Tono 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 Tono.

Maximum UV Index Levels in Tono for September

The chart shows the monthly maximum UV Index (UVI) for Tono 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 Tono typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891110109643
Data source: Tono 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 Tono Compares to Other Months

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

This table compares monthly weather conditions in Tono, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)47 mm (1.9 inches)80%moderate
February Weather0°C (31°F)60 mm (2.4 inches)79%moderate
March Weather4°C (39°F)114 mm (4.5 inches)77%high
April Weather8°C (47°F)120 mm (4.7 inches)75%very high
May Weather14°C (58°F)115 mm (4.5 inches)80%very high
June Weather18°C (64°F)132 mm (5.2 inches)87%extreme
July Weather22°C (71°F)182 mm (7.2 inches)92%very high
August Weather23°C (74°F)180 mm (7.1 inches)92%very high
September Weather19°C (67°F)138 mm (5.4 inches)86%very high
October Weather13°C (56°F)182 mm (7.2 inches)82%high
November Weather7°C (44°F)53 mm (2.1 inches)79%moderate
December Weather1°C (34°F)69 mm (2.7 inches)80%moderate

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