April Weather in Rumoi, Japan

Last updated: August 23, 2025

In April, the average temperature in Rumoi, Japan hovers around 6°C (42°F). Expect a chill, with minimums plummeting to -8°C (19°F), while highs can reach up to 19°C (67°F). Be prepared for some drizzle, as the region experiences about 67 mm (2.6 in) of precipitation over 11 days. With an average humidity of 81%, it’s a moist time of year—perfect for cozying up indoors!

April Temperature in Rumoi

In April in Rumoi, the average temperature is 6°C (42°F), with maximums reaching 19°C (67°F) and minimums dropping as low as -8°C (19°F). Be prepared for a mix of chilly weather and occasional warmth during your travels.

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

The chart illustrates April temperature patterns in Rumoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rumoi, April typically has an average temperature of 6°C (42°F), with highs reaching up to 19°C (67°F) and lows dropping to around -8°C (19°F).

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

April Precipitation in Rumoi

In Rumoi in April, the total precipitation amount is 67 mm (2.6 in) over the course of 11 days.

April Precipitation Trends in Rumoi

The chart displays monthly precipitation patterns in Rumoi, 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 Rumoi, April typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 11 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 Rumoi

In Rumoi in April humidity is 81%. With an average temperature of 6°C (42°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable and somewhat drizzling, leaving travelers yearning for warmer, dryer conditions.

April Average Humidity in Rumoi

This chart illustrates the average monthly humidity levels in Rumoi, 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 Rumoi is approximately 81%, 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 Rumoi

In Rumoi in April, 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 Rumoi.

Maximum UV Index Levels in Rumoi for April

The chart shows the monthly maximum UV Index (UVI) for Rumoi 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 Rumoi typically reaches 7, which falls under the high exposure category.

Data source: Rumoi 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 Rumoi Compares to Other Months

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

This table compares monthly weather conditions in Rumoi, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	70 mm (2.8 inches)	84%	low
February Weather	-4°C (24°F)	84 mm (3.3 inches)	83%	moderate
March Weather	0°C (33°F)	84 mm (3.3 inches)	81%	moderate
April Weather	6°C (42°F)	67 mm (2.6 inches)	81%	high
May Weather	11°C (52°F)	89 mm (3.5 inches)	86%	very high
June Weather	15°C (59°F)	94 mm (3.7 inches)	87%	very high
July Weather	21°C (69°F)	103 mm (4.0 inches)	93%	very high
August Weather	21°C (70°F)	171 mm (6.7 inches)	95%	very high
September Weather	18°C (64°F)	90 mm (3.6 inches)	88%	very high
October Weather	12°C (53°F)	147 mm (5.8 inches)	83%	moderate
November Weather	5°C (41°F)	152 mm (6.0 inches)	79%	moderate
December Weather	-2°C (28°F)	132 mm (5.2 inches)	80%	low