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September Weather in Ota, Japan

Last updated: August 23, 2025

In September, the average temperature in Ota, Japan hovers around 23°C (73°F). However, be prepared for a range, as the minimum can drop to 13°C (56°F) while the maximum can soar up to 35°C (94°F). Expect significant rainfall, with 194 mm (7.6 in) over approximately 19 days, and brace yourself for a high average humidity of 89%.

September Temperature in Ota

In September in Ota, the average temperature is 23°C (73°F), with maximums reaching 35°C (94°F) and minimums dropping to as low as 13°C (56°F). This pleasant climate makes Ota an ideal destination for travelers looking to enjoy a comfortable getaway.

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

The chart illustrates September temperature patterns in Ota, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ota, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (94°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec394149566672788173645344
Data source: Temperature data for Ota 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 Ota

In Ota in September, the total precipitation amount is 194 mm (7.6 in) recorded over a span of 19 days.

September Precipitation Trends in Ota

The chart displays monthly precipitation patterns in Ota, 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 Ota, September typically receives around 194 mm (7.6 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec44421151171241602581481942604341
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ota

In Ota in September, humidity is 89%. With an average temperature of 23°C (73°F), this humidity feels like a thick, warm blanket wrapping around you, making travel feel sticky and heavy, which can be quite draining for explorers.

September Average Humidity in Ota

This chart illustrates the average monthly humidity levels in Ota, 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 Ota is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ota

In Ota 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 Ota.

Maximum UV Index Levels in Ota for September

The chart shows the monthly maximum UV Index (UVI) for Ota 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 Ota typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111119753
Data source: Ota 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 Ota Compares to Other Months

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

This table compares monthly weather conditions in Ota, 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)88%moderate
February Weather5°C (42°F)42 mm (1.7 inches)86%moderate
March Weather9°C (49°F)115 mm (4.5 inches)81%very high
April Weather14°C (57°F)117 mm (4.6 inches)78%very high
May Weather19°C (66°F)124 mm (4.9 inches)81%very high
June Weather22°C (72°F)160 mm (6.3 inches)88%extreme
July Weather25°C (78°F)258 mm (10.2 inches)92%extreme
August Weather27°C (82°F)148 mm (5.8 inches)92%extreme
September Weather23°C (73°F)194 mm (7.6 inches)89%very high
October Weather18°C (64°F)260 mm (10.2 inches)87%high
November Weather12°C (54°F)43 mm (1.7 inches)85%moderate
December Weather7°C (44°F)41 mm (1.6 inches)86%moderate

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