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September Weather in Kariya, Japan

Last updated: August 23, 2025

In September, the average temperature in Kariya, Japan typically hovers around 25°C (78°F). Expect variations with minimums dropping to 15°C (58°F) and maximums soaring up to 37°C (98°F). Rainfall is not uncommon, with an average of 161 mm (6.3 in) spread over 16 days this month, alongside a high average humidity of 87%. Plan accordingly for a warm and humid experience!

September Temperature in Kariya

In September in Kariya, the average temperature is 25°C (78°F). Maximum temperatures can reach 37°C (98°F), while the minimum can drop to as low as 15°C (58°F). Pack light clothing for the warm days, but also bring a light jacket for the cooler evenings.

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

The chart illustrates September temperature patterns in Kariya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kariya, September typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (98°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec424452606874818477675647
Data source: Temperature data for Kariya 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 Kariya

In Kariya in September, the total precipitation amount is 161 mm (6.3 in), occurring over a span of 16 days.

September Precipitation Trends in Kariya

The chart displays monthly precipitation patterns in Kariya, 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 Kariya, September typically receives around 161 mm (6.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec43541301321701503081681612345551
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kariya

In Kariya in September, humidity is 87%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities particularly strenuous and requiring frequent breaks for hydration and shade.

September Average Humidity in Kariya

This chart illustrates the average monthly humidity levels in Kariya, 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 Kariya is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kariya

In Kariya 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 Kariya.

Maximum UV Index Levels in Kariya for September

The chart shows the monthly maximum UV Index (UVI) for Kariya 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 Kariya typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Kariya 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 Kariya Compares to Other Months

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

This table compares monthly weather conditions in Kariya, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)43 mm (1.7 inches)82%moderate
February Weather7°C (44°F)54 mm (2.1 inches)79%high
March Weather11°C (52°F)130 mm (5.1 inches)74%very high
April Weather15°C (60°F)132 mm (5.2 inches)76%very high
May Weather20°C (68°F)170 mm (6.7 inches)83%extreme
June Weather24°C (75°F)150 mm (5.9 inches)87%extreme
July Weather27°C (81°F)308 mm (12.1 inches)93%extreme
August Weather29°C (85°F)168 mm (6.6 inches)91%extreme
September Weather25°C (78°F)161 mm (6.3 inches)87%very high
October Weather20°C (68°F)234 mm (9.2 inches)85%high
November Weather13°C (57°F)55 mm (2.2 inches)83%moderate
December Weather8°C (47°F)51 mm (2.0 inches)83%moderate

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