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September Weather in Yamakita, Japan

Last updated: August 23, 2025

In Yamakita, Japan, the average temperature in September hovers around 22°C (72°F), with a range that can dip to a refreshing 13°C (56°F) or soar to a warm 33°C (91°F). Expect 242 mm (9.5 in) of precipitation over 21 days, contributing to an average humidity of 86%. Embrace the balmy weather and prepare for occasional showers!

September Temperature in Yamakita

In September in Yamakita, the average temperature is 22°C (72°F). Maximum temperatures can reach up to 33°C (91°F), while the minimum can drop as low as 13°C (56°F). This climate makes Yamakita a great destination for travelers seeking pleasant weather and enjoyable outdoor activities.

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

The chart illustrates September temperature patterns in Yamakita, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamakita, 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 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec394147546368757971625344
Data source: Temperature data for Yamakita 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 Yamakita

In Yamakita in September, the total precipitation amount is 242 mm (9.5 in), occurring over the course of 21 days.

September Precipitation Trends in Yamakita

The chart displays monthly precipitation patterns in Yamakita, 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 Yamakita, September typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec698320217318023432119824236010279
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yamakita

In Yamakita in September, humidity is 86%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapping around you as you travel, making it essential to stay hydrated and seek shade during the sun's peak hours.

September Average Humidity in Yamakita

This chart illustrates the average monthly humidity levels in Yamakita, 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 Yamakita is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Yamakita

In Yamakita 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 Yamakita.

Maximum UV Index Levels in Yamakita for September

The chart shows the monthly maximum UV Index (UVI) for Yamakita 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 Yamakita typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Yamakita 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 Yamakita Compares to Other Months

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

This table compares monthly weather conditions in Yamakita, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)69 mm (2.7 inches)76%moderate
February Weather5°C (41°F)83 mm (3.3 inches)74%high
March Weather8°C (47°F)202 mm (7.9 inches)70%very high
April Weather12°C (55°F)173 mm (6.8 inches)74%very high
May Weather17°C (63°F)180 mm (7.1 inches)81%extreme
June Weather20°C (69°F)234 mm (9.2 inches)88%extreme
July Weather24°C (76°F)321 mm (12.6 inches)93%extreme
August Weather26°C (79°F)198 mm (7.8 inches)90%extreme
September Weather22°C (72°F)242 mm (9.5 inches)86%very high
October Weather17°C (62°F)360 mm (14.2 inches)83%high
November Weather12°C (53°F)102 mm (4.0 inches)80%moderate
December Weather6°C (44°F)79 mm (3.1 inches)78%moderate

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