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September Weather in Ichinoseki, Japan

Last updated: August 23, 2025

In Ichinoseki, Japan, the average temperature in September hovers around 20°C (69°F), with lows dipping to 6°C (43°F) and highs reaching up to 34°C (94°F). Expect 120 mm (4.7 in) of precipitation spread over approximately 13 days, accompanied by an average humidity level of 86%. Embrace the warm yet humid days that define this season!

September Temperature in Ichinoseki

In September, in Ichinoseki, the average temperature is 20°C (69°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 6°C (43°F). This pleasant climate makes Ichinoseki an ideal destination for travelers seeking a comfortable and enjoyable getaway.

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

The chart illustrates September temperature patterns in Ichinoseki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ichinoseki, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec333542506066747669584736
Data source: Temperature data for Ichinoseki 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 Ichinoseki

In Ichinoseki in September, the precipitation amount is 120 mm (4.7 in) spread over 13 days.

September Precipitation Trends in Ichinoseki

The chart displays monthly precipitation patterns in Ichinoseki, 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 Ichinoseki, September typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec47531021061001051671621201604965
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ichinoseki

In Ichinoseki in September, humidity is 86%. With an average temperature of 20°C (69°F), this humidity feels like a warm, dense blanket wrapping around you, making travel feel sluggish and sticky, as each step can leave you yearning for a cool breeze or a refreshing drink.

September Average Humidity in Ichinoseki

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

In Ichinoseki 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 Ichinoseki.

Maximum UV Index Levels in Ichinoseki for September

The chart shows the monthly maximum UV Index (UVI) for Ichinoseki 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 Ichinoseki typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010109643
Data source: Ichinoseki 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 Ichinoseki Compares to Other Months

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

This table compares monthly weather conditions in Ichinoseki, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)47 mm (1.9 inches)80%moderate
February Weather1°C (35°F)53 mm (2.1 inches)79%moderate
March Weather5°C (42°F)102 mm (4.0 inches)77%high
April Weather10°C (50°F)106 mm (4.2 inches)75%very high
May Weather16°C (61°F)100 mm (3.9 inches)80%very high
June Weather19°C (67°F)105 mm (4.1 inches)87%very high
July Weather23°C (74°F)167 mm (6.6 inches)92%very high
August Weather24°C (76°F)162 mm (6.4 inches)92%very high
September Weather20°C (69°F)120 mm (4.7 inches)86%very high
October Weather15°C (58°F)160 mm (6.3 inches)82%high
November Weather8°C (47°F)49 mm (1.9 inches)79%moderate
December Weather2°C (37°F)65 mm (2.6 inches)80%moderate

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