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September Weather in Yashiro, Japan

Last updated: August 23, 2025

In September, the average temperature in Yashiro, Japan hovers around 24°C (75°F). However, be prepared for a range, as it can drop to a chilly 11°C (52°F) or soar to a sweltering 36°C (97°F). With 213 mm (8.4 in) of precipitation spread over 14 days, expect a damp environment complemented by an average humidity of 87%. Pack accordingly!

September Temperature in Yashiro

In September in Yashiro, the average temperature is 24°C (75°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 11°C (52°F). This makes it a great time for travelers to enjoy warm days while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Yashiro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yashiro, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec404149576672808375655444
Data source: Temperature data for Yashiro 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 Yashiro

In Yashiro, in September, the precipitation amount is 213 mm (8.4 in), occurring over a span of 14 days.

September Precipitation Trends in Yashiro

The chart displays monthly precipitation patterns in Yashiro, 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 Yashiro, September typically receives around 213 mm (8.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec44541051241231403031982132173956
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yashiro

In Yashiro in September, humidity is 87%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace that clings to your skin, making outdoor activities feel heavier and more exhausting, and the air thickens, leaving you longing for shade and refreshing breezes as you navigate your adventures.

September Average Humidity in Yashiro

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

In Yashiro 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 Yashiro.

Maximum UV Index Levels in Yashiro for September

The chart shows the monthly maximum UV Index (UVI) for Yashiro 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 Yashiro typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121210753
Data source: Yashiro 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 Yashiro Compares to Other Months

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

This table compares monthly weather conditions in Yashiro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)44 mm (1.7 inches)82%moderate
February Weather5°C (41°F)54 mm (2.1 inches)79%high
March Weather9°C (49°F)105 mm (4.1 inches)73%very high
April Weather14°C (57°F)124 mm (4.9 inches)74%very high
May Weather19°C (67°F)123 mm (4.8 inches)84%extreme
June Weather22°C (73°F)140 mm (5.5 inches)86%extreme
July Weather26°C (80°F)302 mm (11.9 inches)92%extreme
August Weather28°C (83°F)198 mm (7.8 inches)92%extreme
September Weather24°C (75°F)213 mm (8.4 inches)87%very high
October Weather18°C (65°F)217 mm (8.5 inches)85%high
November Weather12°C (54°F)38 mm (1.5 inches)84%moderate
December Weather7°C (44°F)56 mm (2.2 inches)82%moderate

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