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October Weather in Hachijo, Japan

Last updated: August 23, 2025

In October, the average temperature in Hachijo, Japan is a pleasant 24°C (75°F), with minimums dipping to 18°C (64°F) and maximums reaching 28°C (83°F). However, be prepared for some rain, as there's an average precipitation of 334 mm (13.1 in) spread over 19 days. This month also boasts a comfortable average humidity of 78%, making it a prime time for both adventure and relaxation!

October Temperature in Hachijo

In October in Hachijo, the average temperature is 24°C (75°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop to as low as 18°C (64°F). This mild climate makes Hachijo an ideal destination for travelers seeking pleasant weather.

October Weather in Hachijo: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Hachijo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hachijo, October typically has an average temperature of 24°C (75°F), with highs reaching up to 28°C (83°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec565560647074808280746861
Data source: Temperature data for Hachijo 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.

October Precipitation in Hachijo

In Hachijo in October, the precipitation amount is 334 mm (13.1 in) during a span of 19 days.

October Precipitation Trends in Hachijo

The chart displays monthly precipitation patterns in Hachijo, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Hachijo, October typically receives around 334 mm (13.1 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec13111420113318433817083311334154133
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Hachijo

In Hachijo in October humidity is 78%. With an average temperature of 24°C (75°F), this humidity feels like a warm blanket wrapping around you, making travel sticky and heavy but also inviting, as long as you're prepared with plenty of water and light clothing.

October Average Humidity in Hachijo

This chart illustrates the average monthly humidity levels in Hachijo, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Hachijo is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec69%68%69%75%82%88%92%85%82%78%74%72%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Hachijo

In Hachijo in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Hachijo.

Maximum UV Index Levels in Hachijo for October

The chart shows the monthly maximum UV Index (UVI) for Hachijo in October, 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 October, the maximum UV index in Hachijo typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110764
Data source: Hachijo October 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 October Weather in Hachijo Compares to Other Months

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

This table compares monthly weather conditions in Hachijo, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)130 mm (5.1 inches)69%moderate
February Weather13°C (56°F)114 mm (4.5 inches)68%high
March Weather15°C (60°F)201 mm (7.9 inches)69%very high
April Weather18°C (64°F)133 mm (5.2 inches)75%extreme
May Weather21°C (70°F)184 mm (7.3 inches)82%extreme
June Weather23°C (74°F)338 mm (13.3 inches)88%extreme
July Weather26°C (80°F)170 mm (6.7 inches)92%extreme
August Weather28°C (82°F)83 mm (3.3 inches)85%extreme
September Weather27°C (80°F)311 mm (12.3 inches)82%very high
October Weather24°C (75°F)334 mm (13.1 inches)78%high
November Weather20°C (68°F)154 mm (6.1 inches)74%high
December Weather16°C (61°F)133 mm (5.2 inches)72%moderate

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