April Weather in Omu, Japan

Last updated: August 23, 2025

In April, the average temperature in Omu, Japan hovers around 4°C (40°F). However, be prepared for a range of temperatures, with a minimum of -9°C (17°F) and a maximum that can reach 20°C (68°F). Expect about 60 mm (2.3 in) of precipitation over 11 days, and keep in mind that humidity is typically high at 85%.

April Temperature in Omu

In April in Omu, the average temperature is 4°C (40°F), with maximums reaching 20°C (68°F) and minimums plummeting to -9°C (17°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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

The chart illustrates April temperature patterns in Omu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Omu, April typically has an average temperature of 4°C (40°F), with highs reaching up to 20°C (68°F) and lows dropping to around -9°C (17°F).

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

April Precipitation in Omu

In Omu in April, the precipitation amount is 60 mm (2.3 in) spread over a total of 11 days.

April Precipitation Trends in Omu

The chart displays monthly precipitation patterns in Omu, 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 Omu, April typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 11 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 Omu

In Omu in April, humidity is 85%. With an average temperature of 4°C (40°F), this humidity feels like an icy blanket wrapping around you, making outdoor activities feel much colder and damp, which can be quite uncomfortable for traveling.

April Average Humidity in Omu

This chart illustrates the average monthly humidity levels in Omu, 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 Omu is approximately 85%, 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 Omu

In Omu 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 Omu.

Maximum UV Index Levels in Omu for April

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

Data source: Omu 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 Omu Compares to Other Months

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

This table compares monthly weather conditions in Omu, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	63 mm (2.5 inches)	87%	low
February Weather	-6°C (21°F)	63 mm (2.5 inches)	86%	moderate
March Weather	-1°C (30°F)	73 mm (2.9 inches)	85%	high
April Weather	4°C (40°F)	60 mm (2.3 inches)	85%	high
May Weather	10°C (51°F)	87 mm (3.4 inches)	88%	very high
June Weather	13°C (56°F)	88 mm (3.5 inches)	88%	very high
July Weather	18°C (65°F)	82 mm (3.2 inches)	93%	very high
August Weather	19°C (66°F)	157 mm (6.2 inches)	95%	very high
September Weather	17°C (62°F)	80 mm (3.1 inches)	88%	high
October Weather	11°C (51°F)	134 mm (5.3 inches)	80%	moderate
November Weather	4°C (39°F)	102 mm (4.0 inches)	78%	moderate
December Weather	-3°C (27°F)	69 mm (2.7 inches)	82%	low