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September Weather in Toyoshina, Japan

Last updated: August 23, 2025

In September, the average temperature in Toyoshina, Japan hovers around 19°C (66°F). Expect a range where the mercury dips to a brisk 6°C (43°F) and soars to a warm 30°C (86°F). Throughout the month, precipitation totals about 222 mm (8.7 in), with rain falling on roughly 19 days, and a noteworthy average humidity of 89% adds to the overall ambience.

September Temperature in Toyoshina

In September in Toyoshina, the average temperature is 19°C (66°F). The maximum can reach 30°C (86°F) and the minimum can be as low as 6°C (43°F). This makes it a great time to explore Toyoshina, with comfortable weather for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Toyoshina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Toyoshina, September typically has an average temperature of 19°C (66°F), with highs reaching up to 30°C (86°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec283040485864727466554434
Data source: Temperature data for Toyoshina 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 Toyoshina

In Toyoshina in September, the total precipitation amount is 222 mm (8.7 in) over a period of 19 days.

September Precipitation Trends in Toyoshina

The chart displays monthly precipitation patterns in Toyoshina, 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 Toyoshina, September typically receives around 222 mm (8.7 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec999715215617919433319722225583109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Toyoshina

In Toyoshina in September humidity is 89%. With an average temperature of 19°C (66°F), this humidity feels like walking through a damp blanket, making every step more laborious and the air thick, potentially leading to discomfort while exploring or sightseeing.

September Average Humidity in Toyoshina

This chart illustrates the average monthly humidity levels in Toyoshina, 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 Toyoshina is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Toyoshina

In Toyoshina 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 Toyoshina.

Maximum UV Index Levels in Toyoshina for September

The chart shows the monthly maximum UV Index (UVI) for Toyoshina 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 Toyoshina typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101111111210754
Data source: Toyoshina 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 Toyoshina Compares to Other Months

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

This table compares monthly weather conditions in Toyoshina, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)99 mm (3.9 inches)88%moderate
February Weather-1°C (30°F)97 mm (3.8 inches)86%high
March Weather4°C (40°F)152 mm (6.0 inches)81%very high
April Weather9°C (48°F)156 mm (6.1 inches)78%very high
May Weather15°C (59°F)179 mm (7.0 inches)81%extreme
June Weather18°C (65°F)194 mm (7.7 inches)88%extreme
July Weather22°C (72°F)333 mm (13.1 inches)92%extreme
August Weather23°C (75°F)197 mm (7.8 inches)92%extreme
September Weather19°C (66°F)222 mm (8.7 inches)89%very high
October Weather13°C (56°F)255 mm (10.1 inches)87%high
November Weather7°C (44°F)83 mm (3.3 inches)85%moderate
December Weather1°C (34°F)109 mm (4.3 inches)86%moderate

Compare Toyoshina's Climate with Cities Worldwide