May Weather in Nantan, Japan

Last updated: August 23, 2025

In May, the average temperature in Nantan, Japan is a pleasant 18°C (65°F). Expect a range where temperatures can dip to a minimum of 5°C (41°F) and peak at a warm 31°C (87°F). During this month, precipitation averages 151 mm (6.0 in) over 11 days, contributing to an average humidity level of 83%. Plan accordingly for a mix of weather conditions!

May Temperature in Nantan

In May in Nantan, the average temperature is 18°C (65°F), with maximums reaching up to 31°C (87°F) and minimums dropping as low as 5°C (41°F). It's a great time to explore and enjoy outdoor activities, so pack accordingly for both warm days and cooler evenings!

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

The chart illustrates May temperature patterns in Nantan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nantan, May typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (87°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Nantan

In Nantan in May, the precipitation amount reaches 151 mm (6.0 in) over a span of 11 days.

May Precipitation Trends in Nantan

The chart displays monthly precipitation patterns in Nantan, 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 Nantan, May typically receives around 151 mm (6.0 inches) of precipitation spread over approximately 11 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 Nantan

In Nantan in May, humidity is 83%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm, damp blanket, making it quite uncomfortable for traveling.

May Average Humidity in Nantan

This chart illustrates the average monthly humidity levels in Nantan, 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 Nantan 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 Nantan

In Nantan 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 Nantan.

Maximum UV Index Levels in Nantan for May

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

Data source: Nantan 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 Nantan Compares to Other Months

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

This table compares monthly weather conditions in Nantan, 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 (39°F)	52 mm (2.1 inches)	82%	moderate
February Weather	4°C (40°F)	62 mm (2.4 inches)	79%	high
March Weather	9°C (48°F)	120 mm (4.7 inches)	74%	very high
April Weather	13°C (56°F)	155 mm (6.1 inches)	76%	very high
May Weather	18°C (65°F)	151 mm (6.0 inches)	83%	extreme
June Weather	22°C (71°F)	158 mm (6.2 inches)	87%	extreme
July Weather	26°C (79°F)	341 mm (13.4 inches)	93%	extreme
August Weather	28°C (82°F)	238 mm (9.4 inches)	91%	extreme
September Weather	23°C (74°F)	193 mm (7.6 inches)	87%	very high
October Weather	18°C (64°F)	243 mm (9.6 inches)	85%	high
November Weather	12°C (53°F)	46 mm (1.8 inches)	83%	moderate
December Weather	6°C (43°F)	64 mm (2.5 inches)	83%	moderate