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September Weather in Hioki, Japan

Last updated: August 23, 2025

In September, the average temperature in Hioki, Japan hovers around 26°C (79°F). Expect a comfortable range, with minimums dipping to 20°C (68°F) and highs reaching up to 32°C (91°F). However, be prepared for some rain, as 278 mm (11.0 in) of precipitation might fall over 17 days. You might also notice the air feels quite humid, with an average humidity of 80%.

September Temperature in Hioki

In September in Hioki, the average temperature is 26°C (79°F). Maximums can reach 32°C (91°F), and minimums can be as low as 20°C (68°F). This pleasant climate makes it an ideal destination for travelers seeking warm weather adventures.

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

The chart illustrates September temperature patterns in Hioki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hioki, September typically has an average temperature of 26°C (79°F), with highs reaching up to 32°C (91°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec515157636974818379726254
Data source: Temperature data for Hioki 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 Hioki

In Hioki in September, the total precipitation amount is 278 mm (11.0 in) over the course of 17 days.

September Precipitation Trends in Hioki

The chart displays monthly precipitation patterns in Hioki, 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 Hioki, September typically receives around 278 mm (11.0 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec67121188160271411418206278143116101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hioki

In Hioki in September humidity is 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

September Average Humidity in Hioki

This chart illustrates the average monthly humidity levels in Hioki, 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 Hioki is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%68%72%79%83%86%90%85%80%78%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hioki

In Hioki in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Hioki.

Maximum UV Index Levels in Hioki for September

The chart shows the monthly maximum UV Index (UVI) for Hioki 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 Hioki typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5610111212121311864
Data source: Hioki 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 Hioki Compares to Other Months

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

This table compares monthly weather conditions in Hioki, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)67 mm (2.6 inches)72%moderate
February Weather11°C (52°F)121 mm (4.7 inches)68%high
March Weather14°C (58°F)188 mm (7.4 inches)72%very high
April Weather17°C (63°F)160 mm (6.3 inches)79%extreme
May Weather21°C (69°F)271 mm (10.7 inches)83%extreme
June Weather24°C (75°F)411 mm (16.2 inches)86%extreme
July Weather27°C (81°F)418 mm (16.4 inches)90%extreme
August Weather28°C (83°F)206 mm (8.1 inches)85%extreme
September Weather26°C (79°F)278 mm (11.0 inches)80%extreme
October Weather22°C (72°F)143 mm (5.6 inches)78%very high
November Weather17°C (63°F)116 mm (4.6 inches)76%high
December Weather12°C (54°F)101 mm (4.0 inches)74%moderate

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