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September Weather in Yasugi, Japan

Last updated: August 23, 2025

In September, the average temperature in Yasugi, Japan is a comfortable 22°C (72°F), with extremes ranging from a cool 11°C (53°F) to a balmy 33°C (92°F). Expect 238 mm (9.4 in) of precipitation over about 16 days, contributing to a high average humidity of 87%. ☔

September Temperature in Yasugi

In September in Yasugi, the average temperature is 22°C (72°F), with maximums reaching 33°C (92°F) and minimums dropping to as low as 11°C (53°F). This makes it an ideal time for travelers seeking mild weather for outdoor adventures and sightseeing.

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

The chart illustrates September temperature patterns in Yasugi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yasugi, September typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (92°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec373846546470778072615141
Data source: Temperature data for Yasugi 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 Yasugi

In Yasugi in September, the total precipitation amount is 238 mm (9.4 in) over a period of 16 days.

September Precipitation Trends in Yasugi

The chart displays monthly precipitation patterns in Yasugi, 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 Yasugi, September typically receives around 238 mm (9.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec869513912910320632226323817854109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yasugi

In Yasugi in September humidity is 87%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapping around you, making every step while traveling feel slightly heavier and more tedious, yet still refreshing in the shade.

September Average Humidity in Yasugi

This chart illustrates the average monthly humidity levels in Yasugi, 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 Yasugi is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Yasugi

In Yasugi 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 Yasugi.

Maximum UV Index Levels in Yasugi for September

The chart shows the monthly maximum UV Index (UVI) for Yasugi 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 Yasugi typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210753
Data source: Yasugi 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 Yasugi Compares to Other Months

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

This table compares monthly weather conditions in Yasugi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)86 mm (3.4 inches)82%moderate
February Weather4°C (39°F)95 mm (3.8 inches)79%high
March Weather8°C (47°F)139 mm (5.5 inches)73%very high
April Weather12°C (54°F)129 mm (5.1 inches)74%extreme
May Weather18°C (64°F)103 mm (4.1 inches)84%extreme
June Weather21°C (70°F)206 mm (8.1 inches)86%extreme
July Weather25°C (78°F)322 mm (12.7 inches)92%extreme
August Weather27°C (80°F)263 mm (10.3 inches)92%extreme
September Weather22°C (72°F)238 mm (9.4 inches)87%very high
October Weather16°C (62°F)178 mm (7.0 inches)85%high
November Weather10°C (51°F)54 mm (2.1 inches)84%moderate
December Weather5°C (42°F)109 mm (4.3 inches)82%moderate

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