May Weather in Yamatokoriyama, Japan

Last updated: August 23, 2025

In May, the average temperature in Yamatokoriyama, Japan hovers around 19°C (66°F), but don't be surprised by the range—thermometers can dip to a cool 4°C (40°F) or soar to a warm 31°C (88°F). Expect some wet days, as rainfall averages 157 mm (6.2 in) over about 10 days, and keep your umbrella handy with an average humidity level of 83%.

May Temperature in Yamatokoriyama

In May in Yamatokoriyama, the average temperature is 19°C (66°F). The maximum can reach 31°C (88°F) and the minimum can be as low as 4°C (40°F). This makes Yamatokoriyama an ideal destination for travelers looking to enjoy mild weather with warm days and cooler nights.

May Weather in Yamatokoriyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Yamatokoriyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamatokoriyama, May typically has an average temperature of 19°C (66°F), with highs reaching up to 31°C (88°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Yamatokoriyama

In Yamatokoriyama in May, the total precipitation amount is 157 mm (6.2 in) over the course of 10 days.

May Precipitation Trends in Yamatokoriyama

The chart displays monthly precipitation patterns in Yamatokoriyama, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Yamatokoriyama, May typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Yamatokoriyama

In Yamatokoriyama in May, humidity is 83%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making travel feel more sluggish and muggy, yet there's a refreshing coolness in the air that invites you to explore.

May Average Humidity in Yamatokoriyama

This chart illustrates the average monthly humidity levels in Yamatokoriyama, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Yamatokoriyama is approximately 83%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Yamatokoriyama

In Yamatokoriyama in May, 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 Yamatokoriyama.

Maximum UV Index Levels in Yamatokoriyama for May

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

Data source: Yamatokoriyama May 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 May Weather in Yamatokoriyama Compares to Other Months

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

This table compares monthly weather conditions in Yamatokoriyama, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	60 mm (2.4 inches)	82%	moderate
February Weather	5°C (41°F)	73 mm (2.9 inches)	79%	high
March Weather	9°C (49°F)	128 mm (5.1 inches)	74%	very high
April Weather	14°C (57°F)	131 mm (5.1 inches)	76%	extreme
May Weather	19°C (66°F)	157 mm (6.2 inches)	83%	extreme
June Weather	22°C (72°F)	192 mm (7.6 inches)	87%	extreme
July Weather	26°C (80°F)	290 mm (11.4 inches)	93%	extreme
August Weather	28°C (83°F)	174 mm (6.8 inches)	91%	extreme
September Weather	24°C (75°F)	181 mm (7.1 inches)	87%	very high
October Weather	18°C (64°F)	268 mm (10.6 inches)	85%	high
November Weather	12°C (53°F)	51 mm (2.0 inches)	83%	high
December Weather	6°C (44°F)	70 mm (2.8 inches)	83%	moderate