April Weather in Hamatonbetsu, Japan

Last updated: August 23, 2025

In April, the average temperature in Hamatonbetsu, Japan hovers around 4°C (39°F), with minimums dipping to -5°C (23°F) and maximums reaching up to 13°C (56°F). Expect around 56 mm (2.2 in) of precipitation spread over 8 days, contributing to a notably high average humidity of 84%.

April Temperature in Hamatonbetsu

In April in Hamatonbetsu, the average temperature is 4°C (39°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -5°C (23°F). Travelers should prepare for chilly weather and pack accordingly to stay comfortable during their visit.

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

The chart illustrates April temperature patterns in Hamatonbetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamatonbetsu, April typically has an average temperature of 4°C (39°F), with highs reaching up to 13°C (56°F) and lows dropping to around -5°C (23°F).

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

April Precipitation in Hamatonbetsu

In Hamatonbetsu in April, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.

April Precipitation Trends in Hamatonbetsu

The chart displays monthly precipitation patterns in Hamatonbetsu, 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 Hamatonbetsu, April typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Hamatonbetsu

In Hamatonbetsu in April, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.

April Average Humidity in Hamatonbetsu

This chart illustrates the average monthly humidity levels in Hamatonbetsu, 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 Hamatonbetsu is approximately 84%, 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 Hamatonbetsu

In Hamatonbetsu in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Hamatonbetsu, you can refer to this Hourly UV Index in Hamatonbetsu.

Maximum UV Index Levels in Hamatonbetsu for April

The chart shows the monthly maximum UV Index (UVI) for Hamatonbetsu 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 Hamatonbetsu typically reaches 6, which falls under the high exposure category.

Data source: Hamatonbetsu 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 Hamatonbetsu Compares to Other Months

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

This table compares monthly weather conditions in Hamatonbetsu, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	71 mm (2.8 inches)	87%	low
February Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	moderate
March Weather	-1°C (31°F)	70 mm (2.7 inches)	83%	moderate
April Weather	4°C (39°F)	56 mm (2.2 inches)	84%	high
May Weather	8°C (46°F)	83 mm (3.3 inches)	88%	very high
June Weather	11°C (52°F)	92 mm (3.6 inches)	88%	very high
July Weather	16°C (61°F)	100 mm (3.9 inches)	93%	very high
August Weather	18°C (65°F)	164 mm (6.5 inches)	94%	very high
September Weather	17°C (63°F)	76 mm (3.0 inches)	86%	high
October Weather	12°C (54°F)	126 mm (5.0 inches)	79%	moderate
November Weather	5°C (41°F)	136 mm (5.4 inches)	77%	moderate
December Weather	-1°C (30°F)	129 mm (5.1 inches)	83%	low