May Weather in Shunan, Japan

Last updated: August 23, 2025

In May, the average temperature in Shunan, Japan hovers around 18°C (65°F), offering a pleasant climate for visitors. Depending on the weather, temperatures can dip to a cool 10°C (51°F) at night or rise to a warm 25°C (77°F) during the day. However, be prepared for some rain, as precipitation averages 166 mm (6.5 in) over 9 days, and the air tends to be quite damp with an average humidity of 84%.

May Temperature in Shunan

In May in Shunan, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 25°C (77°F), while minimums can dip as low as 10°C (51°F). It's a comfortable time for traveling, so pack accordingly and enjoy the mild climate!

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

The chart illustrates May temperature patterns in Shunan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shunan, May typically has an average temperature of 18°C (65°F), with highs reaching up to 25°C (77°F) and lows dropping to around 10°C (51°F).

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

May Precipitation in Shunan

In Shunan in May, the precipitation amount is 166 mm (6.5 in) distributed over 9 days.

May Precipitation Trends in Shunan

The chart displays monthly precipitation patterns in Shunan, 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 Shunan, May typically receives around 166 mm (6.5 inches) of precipitation spread over approximately 9 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 Shunan

In Shunan in May, humidity is 84%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and slightly uncomfortable as the air clings to your skin and limits your breath.

May Average Humidity in Shunan

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

In Shunan 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 Shunan.

Maximum UV Index Levels in Shunan for May

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

Data source: Shunan 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 Shunan Compares to Other Months

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

This table compares monthly weather conditions in Shunan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	57 mm (2.2 inches)	75%	moderate
February Weather	7°C (45°F)	82 mm (3.2 inches)	71%	moderate
March Weather	10°C (51°F)	130 mm (5.1 inches)	71%	very high
April Weather	14°C (57°F)	144 mm (5.7 inches)	78%	extreme
May Weather	18°C (65°F)	166 mm (6.5 inches)	84%	extreme
June Weather	22°C (71°F)	203 mm (8.0 inches)	86%	extreme
July Weather	26°C (78°F)	358 mm (14.1 inches)	92%	extreme
August Weather	27°C (81°F)	235 mm (9.3 inches)	91%	extreme
September Weather	24°C (76°F)	221 mm (8.7 inches)	84%	very high
October Weather	20°C (67°F)	153 mm (6.0 inches)	83%	high
November Weather	14°C (58°F)	45 mm (1.8 inches)	81%	high
December Weather	9°C (48°F)	65 mm (2.6 inches)	79%	moderate