April Weather in Hachijo, Japan

Last updated: August 23, 2025

In April, the average temperature in Hachijo, Japan is a comfortable 18°C (64°F), with a minimum dipping to 11°C (51°F) and peaking at 23°C (73°F). Expect 133 mm (5.2 in) of precipitation spread over 12 days, contributing to an average humidity of 75%. Whether you're planning outdoor activities or cozy indoor pursuits, this month offers a unique blend of weather to enjoy!

April Temperature in Hachijo

In April in Hachijo, the average temperature is 18°C (64°F). Maximums can reach 23°C (73°F), while minimums can drop as low as 11°C (51°F). This mild weather makes Hachijo a comfortable destination for outdoor activities and exploration during this time.

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

The chart illustrates April 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, April typically has an average temperature of 18°C (64°F), with highs reaching up to 23°C (73°F) and lows dropping to around 11°C (51°F).

Data source: Temperature data for Hachijo generated using information from the Copernicus Climate Change Service.

April Precipitation in Hachijo

In Hachijo in April, the precipitation amount is 133 mm (5.2 in) spread over 12 days.

April Precipitation Trends in Hachijo

The chart displays monthly precipitation patterns in Hachijo, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hachijo, April typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Hachijo

In Hachijo in April, humidity is 75%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket enveloping you, making your travels a bit sticky and requiring frequent breaks in the shade to stay comfortable.

April Average Humidity in Hachijo

This chart illustrates the average monthly humidity levels in Hachijo, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hachijo is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hachijo

In Hachijo in April, 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 Hachijo.

Maximum UV Index Levels in Hachijo for April

The chart shows the monthly maximum UV Index (UVI) for Hachijo in April, 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 April, the maximum UV index in Hachijo typically reaches 11, which falls under the extreme exposure category.

Data source: Hachijo April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	130 mm (5.1 inches)	69%	moderate
February Weather	13°C (56°F)	114 mm (4.5 inches)	68%	high
March Weather	15°C (60°F)	201 mm (7.9 inches)	69%	very high
April Weather	18°C (64°F)	133 mm (5.2 inches)	75%	extreme
May Weather	21°C (70°F)	184 mm (7.3 inches)	82%	extreme
June Weather	23°C (74°F)	338 mm (13.3 inches)	88%	extreme
July Weather	26°C (80°F)	170 mm (6.7 inches)	92%	extreme
August Weather	28°C (82°F)	83 mm (3.3 inches)	85%	extreme
September Weather	27°C (80°F)	311 mm (12.3 inches)	82%	very high
October Weather	24°C (75°F)	334 mm (13.1 inches)	78%	high
November Weather	20°C (68°F)	154 mm (6.1 inches)	74%	high
December Weather	16°C (61°F)	133 mm (5.2 inches)	72%	moderate