May Weather in Nagaoka, Japan

Last updated: August 23, 2025

In May, the average temperature in Nagaoka, Japan hovers around 18°C (64°F), with a minimum of 6°C (44°F) and a maximum that can reach up to 33°C (92°F). Expect 110 mm (4.3 in) of precipitation spread over 14 days, contributing to an average humidity level of 81%. Embrace the refreshing atmosphere!

May Temperature in Nagaoka

In May in Nagaoka, the average temperature is 18°C (64°F), with maximums reaching up to 33°C (92°F) and minimums dipping as low as 6°C (44°F). This climate makes Nagaoka an ideal destination for travelers who enjoy mild weather with the possibility of warm days and cooler nights.

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

The chart illustrates May temperature patterns in Nagaoka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagaoka, May typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (44°F).

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

May Precipitation in Nagaoka

In Nagaoka in May, the total precipitation amount is 110 mm (4.3 in) spread over 14 days.

May Precipitation Trends in Nagaoka

The chart displays monthly precipitation patterns in Nagaoka, 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 Nagaoka, May typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 14 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 Nagaoka

In Nagaoka in May, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

May Average Humidity in Nagaoka

This chart illustrates the average monthly humidity levels in Nagaoka, 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 Nagaoka is approximately 81%, 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 Nagaoka

In Nagaoka in May, 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 Nagaoka.

Maximum UV Index Levels in Nagaoka for May

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

Data source: Nagaoka 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 Nagaoka Compares to Other Months

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

This table compares monthly weather conditions in Nagaoka, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	165 mm (6.5 inches)	88%	moderate
February Weather	3°C (38°F)	138 mm (5.4 inches)	86%	moderate
March Weather	7°C (45°F)	130 mm (5.1 inches)	81%	high
April Weather	12°C (53°F)	114 mm (4.5 inches)	78%	very high
May Weather	18°C (64°F)	110 mm (4.3 inches)	81%	very high
June Weather	21°C (71°F)	108 mm (4.3 inches)	88%	very high
July Weather	26°C (79°F)	283 mm (11.2 inches)	92%	extreme
August Weather	27°C (82°F)	186 mm (7.3 inches)	92%	extreme
September Weather	23°C (73°F)	151 mm (5.9 inches)	89%	very high
October Weather	17°C (63°F)	158 mm (6.2 inches)	87%	high
November Weather	11°C (52°F)	139 mm (5.5 inches)	85%	moderate
December Weather	5°C (41°F)	204 mm (8.0 inches)	86%	moderate