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September Weather in Tomioka, Japan

Last updated: August 23, 2025

In Tomioka, Japan, the average temperature in September reaches a pleasant 22°C (71°F). However, be prepared for a range, as it can dip to a minimum of 12°C (54°F) and soar to a maximum of 33°C (92°F). This month also brings 171 mm (6.7 in) of precipitation over approximately 17 days, contributing to an average humidity level of 84%. Ideal conditions for those who enjoy a tropical atmosphere!

September Temperature in Tomioka

In September in Tomioka, the average temperature is 22°C (71°F). Maximums can reach 33°C (92°F), while minimums can be as low as 12°C (54°F). This makes it an ideal time for travelers seeking pleasant weather combined with opportunities for both warm and cooler experiences.

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

The chart illustrates September temperature patterns in Tomioka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomioka, September typically has an average temperature of 22°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec383946536368757871625242
Data source: Temperature data for Tomioka 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 Tomioka

In Tomioka in September, the precipitation amount is 171 mm (6.7 in) over the course of 17 days.

September Precipitation Trends in Tomioka

The chart displays monthly precipitation patterns in Tomioka, 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 Tomioka, September typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec50381441211371212381511712346060
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tomioka

In Tomioka in September, humidity is 84%. With an average temperature of 22°C (71°F), this humidity feels like a warm, sticky blanket wrapping around you, making outdoor activities a bit challenging but also inviting you to seek out shaded spots and cool refreshments during your travels.

September Average Humidity in Tomioka

This chart illustrates the average monthly humidity levels in Tomioka, 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 Tomioka is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%72%73%80%87%93%90%84%80%77%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tomioka

In Tomioka 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 Tomioka.

Maximum UV Index Levels in Tomioka for September

The chart shows the monthly maximum UV Index (UVI) for Tomioka 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 Tomioka typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119653
Data source: Tomioka 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 Tomioka Compares to Other Months

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

This table compares monthly weather conditions in Tomioka, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)50 mm (2.0 inches)76%moderate
February Weather4°C (40°F)38 mm (1.5 inches)75%moderate
March Weather8°C (46°F)144 mm (5.7 inches)72%high
April Weather12°C (53°F)121 mm (4.8 inches)73%very high
May Weather17°C (63°F)137 mm (5.4 inches)80%very high
June Weather20°C (68°F)121 mm (4.8 inches)87%very high
July Weather24°C (75°F)238 mm (9.4 inches)92%extreme
August Weather26°C (79°F)151 mm (5.9 inches)90%extreme
September Weather22°C (71°F)171 mm (6.7 inches)84%very high
October Weather17°C (62°F)233 mm (9.2 inches)80%high
November Weather11°C (52°F)60 mm (2.4 inches)77%moderate
December Weather5°C (42°F)60 mm (2.3 inches)77%moderate

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