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September Weather in Yamada, Japan

Last updated: August 23, 2025

In September, the average temperature in Yamada, Japan hovers around 20°C (68°F), making it a delightful time to explore. Temperatures can dip to a cool 13°C (56°F) at their lowest, while reaching a pleasant 27°C (80°F) at their peak. However, be prepared for some rain, as the region sees about 195 mm (7.7 in) of precipitation over 13 days. With an average humidity of 86%, it's wise to embrace the tropical vibes!

September Temperature in Yamada

In September in Yamada, the average temperature is 20°C (68°F). Maximums can reach 27°C (80°F), while minimums can drop to as low as 13°C (56°F). This mild climate makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Yamada, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamada, September typically has an average temperature of 20°C (68°F), with highs reaching up to 27°C (80°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec363541465460677168605141
Data source: Temperature data for Yamada 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 Yamada

In Yamada in September, the precipitation amount is 195 mm (7.7 in) spread over 13 days, highlighting a significant level of rainfall for the region.

September Precipitation Trends in Yamada

The chart displays monthly precipitation patterns in Yamada, 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 Yamada, September typically receives around 195 mm (7.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec59671131261121151752181952545872
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yamada

In Yamada in September, humidity is 86%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities challenging and necessitating frequent breaks for hydration and shade while traveling.

September Average Humidity in Yamada

This chart illustrates the average monthly humidity levels in Yamada, 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 Yamada is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Yamada

In Yamada in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Yamada.

Maximum UV Index Levels in Yamada for September

The chart shows the monthly maximum UV Index (UVI) for Yamada 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 Yamada typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246891110119643
Data source: Yamada 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 Yamada Compares to Other Months

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

This table compares monthly weather conditions in Yamada, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)59 mm (2.3 inches)80%low
February Weather2°C (36°F)66 mm (2.6 inches)79%moderate
March Weather5°C (41°F)113 mm (4.4 inches)77%high
April Weather8°C (46°F)126 mm (5.0 inches)75%very high
May Weather12°C (54°F)112 mm (4.4 inches)80%very high
June Weather16°C (60°F)115 mm (4.5 inches)87%extreme
July Weather20°C (68°F)175 mm (6.9 inches)92%very high
August Weather22°C (71°F)218 mm (8.6 inches)92%extreme
September Weather20°C (68°F)195 mm (7.7 inches)86%very high
October Weather16°C (60°F)254 mm (10.0 inches)82%high
November Weather10°C (51°F)58 mm (2.3 inches)79%moderate
December Weather5°C (41°F)72 mm (2.8 inches)80%moderate

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