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September Weather in Miyoshi, Japan

Last updated: August 23, 2025

In September, the weather in Miyoshi, Japan averages a pleasant 22°C (72°F). However, temperatures can vary, dipping to a cool 11°C (52°F) and soaring to a warm 33°C (91°F). With 230 mm (9.1 in) of precipitation spread across 13 days, expect a mix of sunshine and showers. The average humidity is a high 87%, contributing to the lush, vibrant atmosphere of the area.

September Temperature in Miyoshi

In September in Miyoshi, the average temperature is 22°C (72°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 11°C (52°F). This mild climate makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Miyoshi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Miyoshi, September typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (91°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec373947556470778072615041
Data source: Temperature data for Miyoshi 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 Miyoshi

In Miyoshi in September, the precipitation amount is 230 mm (9.1 in) distributed over a span of 13 days.

September Precipitation Trends in Miyoshi

The chart displays monthly precipitation patterns in Miyoshi, 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 Miyoshi, September typically receives around 230 mm (9.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec62671161231151883892572301604069
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Miyoshi

In Miyoshi 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 Miyoshi

This chart illustrates the average monthly humidity levels in Miyoshi, 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 Miyoshi 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 Miyoshi

In Miyoshi 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 Miyoshi.

Maximum UV Index Levels in Miyoshi for September

The chart shows the monthly maximum UV Index (UVI) for Miyoshi 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 Miyoshi typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210754
Data source: Miyoshi 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 Miyoshi Compares to Other Months

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

This table compares monthly weather conditions in Miyoshi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)61 mm (2.4 inches)82%moderate
February Weather4°C (39°F)67 mm (2.6 inches)79%high
March Weather8°C (47°F)116 mm (4.5 inches)73%very high
April Weather13°C (55°F)123 mm (4.9 inches)74%extreme
May Weather18°C (64°F)115 mm (4.5 inches)84%extreme
June Weather21°C (70°F)188 mm (7.4 inches)86%extreme
July Weather25°C (77°F)389 mm (15.3 inches)92%extreme
August Weather27°C (80°F)257 mm (10.1 inches)92%extreme
September Weather22°C (72°F)230 mm (9.1 inches)87%very high
October Weather16°C (62°F)159 mm (6.3 inches)85%high
November Weather10°C (51°F)40 mm (1.6 inches)84%moderate
December Weather5°C (41°F)69 mm (2.7 inches)82%moderate

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