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September Weather in Ashoro, Japan

Last updated: August 23, 2025

In September, the average temperature in Ashoro, Japan is a pleasant 15°C (59°F). Expect temperatures to range from a chilly 2°C (36°F) at night to a warm 29°C (85°F) during the day. Be prepared for some moisture, as 114 mm (4.5 in) of precipitation is spread over 13 days, contributing to an average humidity level of 89%.

September Temperature in Ashoro

In September in Ashoro, the average temperature is 15°C (59°F). Maximum temperatures can reach 29°C (85°F), while minimums can drop as low as 2°C (36°F). This makes Ashoro an ideal destination for travelers seeking pleasant and varied weather.

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

The chart illustrates September temperature patterns in Ashoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashoro, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (85°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec171830405157646559483623
Data source: Temperature data for Ashoro 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 Ashoro

In Ashoro in September, the total precipitation amount is 114 mm (4.5 in), distributed over the course of 13 days.

September Precipitation Trends in Ashoro

The chart displays monthly precipitation patterns in Ashoro, 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 Ashoro, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec4446988497114901551141699253
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ashoro

In Ashoro in September humidity is 89%. With an average temperature of 15°C (59°F), this humidity feels like a damp blanket enveloping you, making even short walks feel heavy and sluggish, while creating a sense of heaviness in the air that can dampen the joy of exploring.

September Average Humidity in Ashoro

This chart illustrates the average monthly humidity levels in Ashoro, 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 Ashoro is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%83%86%88%93%96%89%83%80%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ashoro

In Ashoro in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Ashoro.

Maximum UV Index Levels in Ashoro for September

The chart shows the monthly maximum UV Index (UVI) for Ashoro 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 Ashoro typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23588101098532
Data source: Ashoro 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 Ashoro Compares to Other Months

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

This table compares monthly weather conditions in Ashoro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)44 mm (1.7 inches)84%low
February Weather-8°C (18°F)46 mm (1.8 inches)83%moderate
March Weather-1°C (30°F)98 mm (3.8 inches)83%moderate
April Weather4°C (40°F)84 mm (3.3 inches)83%very high
May Weather11°C (52°F)96 mm (3.8 inches)86%very high
June Weather14°C (57°F)114 mm (4.5 inches)88%very high
July Weather18°C (65°F)90 mm (3.5 inches)93%very high
August Weather18°C (65°F)155 mm (6.1 inches)96%very high
September Weather15°C (59°F)114 mm (4.5 inches)89%very high
October Weather9°C (49°F)169 mm (6.6 inches)83%moderate
November Weather2°C (36°F)92 mm (3.6 inches)80%moderate
December Weather-5°C (23°F)53 mm (2.1 inches)79%low

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