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June Weather in Hachijo, Japan

Last updated: August 23, 2025

In June, the average temperature in Hachijo, Japan hovers around 23°C (74°F). Expect a comfortable range, with minimums dipping to 18°C (64°F) and maximums reaching 26°C (80°F). However, be prepared for some rain, as 338 mm (13.3 in) of precipitation falls over 17 days. The atmosphere tends to be quite humid, with an average humidity level of 88%.

June Temperature in Hachijo

In June in Hachijo, the average temperature is 23°C (74°F), with maximums reaching 26°C (80°F) and minimums dropping to as low as 18°C (64°F). This pleasant climate makes it an ideal time for traveling and enjoying outdoor activities.

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

The chart illustrates June 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, June typically has an average temperature of 23°C (74°F), with highs reaching up to 26°C (80°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.

June Precipitation in Hachijo

In Hachijo in June, the precipitation amount is 338 mm (13.3 in) over a span of 17 days.

June Precipitation Trends in Hachijo

The chart displays monthly precipitation patterns in Hachijo, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Hachijo, June typically receives around 338 mm (13.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec13111420113318433817083311334154133
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Hachijo

In Hachijo in June, humidity is 88%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket, making outdoor activities quickly exhausting and urging travelers to seek shade or refreshing drinks to stay comfortable.

June Average Humidity in Hachijo

This chart illustrates the average monthly humidity levels in Hachijo, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Hachijo is approximately 88%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Hachijo

In Hachijo in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Hachijo.

Maximum UV Index Levels in Hachijo for June

The chart shows the monthly maximum UV Index (UVI) for Hachijo in June, 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 June, the maximum UV index in Hachijo typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110764
Data source: Hachijo June 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 June 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 June’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 June’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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