March Weather in Joetsu, Japan

Last updated: August 23, 2025

In Joetsu, Japan, the average temperature in March hovers around 8°C (46°F). During this month, you can expect temperatures to dip as low as -2°C (29°F) and rise up to a cozy 20°C (68°F). Rainfall is frequent, with an average precipitation of 128 mm (5.0 in) spread over 19 days. Additionally, the air is quite humid, with an average humidity level of 81%.

March Temperature in Joetsu

In March in Joetsu, the average temperature is 8°C (46°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -2°C (29°F). Pack layers to ensure comfort while exploring, as the weather can vary significantly throughout the day.

March Weather in Joetsu: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Joetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joetsu, March typically has an average temperature of 8°C (46°F), with highs reaching up to 20°C (68°F) and lows dropping to around -2°C (29°F).

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

March Precipitation in Joetsu

In Joetsu in March, the total precipitation amount is 128 mm (5.0 in) spread across 19 days.

March Precipitation Trends in Joetsu

The chart displays monthly precipitation patterns in Joetsu, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Joetsu, March typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 19 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Joetsu

In Joetsu in March humidity is 81%. With an average temperature of 8°C (46°F), this humidity feels like walking through a damp blanket, making traveling uncomfortable and leading to a persistent chill that seeps into your bones.

March Average Humidity in Joetsu

This chart illustrates the average monthly humidity levels in Joetsu, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Joetsu is approximately 81%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Joetsu

In Joetsu in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Joetsu.

Maximum UV Index Levels in Joetsu for March

The chart shows the monthly maximum UV Index (UVI) for Joetsu in March, 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 March, the maximum UV index in Joetsu typically reaches 8, which falls under the very high exposure category.

Data source: Joetsu March 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 March Weather in Joetsu Compares to Other Months

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

This table compares monthly weather conditions in Joetsu, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	233 mm (9.2 inches)	88%	moderate
February Weather	4°C (39°F)	181 mm (7.1 inches)	86%	moderate
March Weather	8°C (46°F)	128 mm (5.0 inches)	81%	very high
April Weather	12°C (53°F)	121 mm (4.7 inches)	78%	very high
May Weather	17°C (64°F)	105 mm (4.1 inches)	81%	very high
June Weather	21°C (70°F)	105 mm (4.1 inches)	88%	extreme
July Weather	26°C (79°F)	290 mm (11.4 inches)	92%	extreme
August Weather	27°C (82°F)	157 mm (6.2 inches)	92%	extreme
September Weather	23°C (74°F)	171 mm (6.7 inches)	89%	very high
October Weather	18°C (64°F)	190 mm (7.5 inches)	87%	high
November Weather	12°C (53°F)	170 mm (6.7 inches)	85%	moderate
December Weather	6°C (43°F)	273 mm (10.7 inches)	86%	moderate