April Weather in Oyama, Japan

Last updated: August 23, 2025

The average temperature in Oyama, Japan during April is a pleasant 16°C (60°F). Expect a minimum of 8°C (46°F) and a maximum of 22°C (71°F). Be prepared for some moisture as precipitation reaches 164 mm (6.4 in) over about 10 days, with an average humidity of 74%. Enjoy the mild climate!

April Temperature in Oyama

In April in Oyama, the average temperature is 16°C (60°F), with maximums reaching 22°C (71°F) and minimums dropping to as low as 8°C (46°F). It's an ideal time for travelers to enjoy a pleasant climate while exploring the attractions of Oyama.

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

The chart illustrates April temperature patterns in Oyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oyama, April typically has an average temperature of 16°C (60°F), with highs reaching up to 22°C (71°F) and lows dropping to around 8°C (46°F).

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

April Precipitation in Oyama

In Oyama in April, the precipitation amount is 164 mm (6.4 in) over a period of 10 days.

April Precipitation Trends in Oyama

The chart displays monthly precipitation patterns in Oyama, 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 Oyama, April typically receives around 164 mm (6.4 inches) of precipitation spread over approximately 10 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 Oyama

In Oyama in April humidity is 74%. With an average temperature of 16°C (60°F), this humidity feels like a damp blanket enveloping you, making traveling a bit uncomfortable as you navigate the sticky air and potentially limiting your energy for exploring the sights.

April Average Humidity in Oyama

This chart illustrates the average monthly humidity levels in Oyama, 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 Oyama is approximately 74%, 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 Oyama

In Oyama in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Oyama.

Maximum UV Index Levels in Oyama for April

The chart shows the monthly maximum UV Index (UVI) for Oyama 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 Oyama typically reaches 10, which falls under the very high exposure category.

Data source: Oyama 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 Oyama Compares to Other Months

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

This table compares monthly weather conditions in Oyama, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (49°F)	70 mm (2.8 inches)	76%	moderate
February Weather	10°C (50°F)	93 mm (3.7 inches)	74%	high
March Weather	13°C (55°F)	189 mm (7.4 inches)	70%	very high
April Weather	16°C (60°F)	164 mm (6.4 inches)	74%	very high
May Weather	19°C (67°F)	213 mm (8.4 inches)	81%	extreme
June Weather	22°C (72°F)	302 mm (11.9 inches)	88%	extreme
July Weather	25°C (78°F)	363 mm (14.3 inches)	93%	extreme
August Weather	27°C (81°F)	163 mm (6.4 inches)	90%	extreme
September Weather	25°C (78°F)	255 mm (10.0 inches)	86%	very high
October Weather	22°C (71°F)	328 mm (12.9 inches)	83%	high
November Weather	17°C (63°F)	137 mm (5.4 inches)	80%	moderate
December Weather	12°C (55°F)	99 mm (3.9 inches)	78%	moderate