March Weather in Iwamizawa, Japan

Last updated: August 23, 2025

In March, the average temperature in Iwamizawa, Japan hovers around 1°C (34°F). Expect a chill with minimum temperatures dipping to -15°C (6°F), while highs can reach up to 15°C (59°F). With an average humidity of 81%, this month also brings 75 mm (2.9 in) of precipitation, typically spread over 11 days.

March Temperature in Iwamizawa

In March in Iwamizawa, the average temperature is 1°C (34°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -15°C (6°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack accordingly for both chilly and mild days.

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

The chart illustrates March temperature patterns in Iwamizawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iwamizawa, March typically has an average temperature of 1°C (34°F), with highs reaching up to 15°C (59°F) and lows dropping to around -15°C (6°F).

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

March Precipitation in Iwamizawa

In Iwamizawa in March, the precipitation amount is 75 mm (2.9 in) over the course of 11 days.

March Precipitation Trends in Iwamizawa

The chart displays monthly precipitation patterns in Iwamizawa, 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 Iwamizawa, March typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Iwamizawa

In Iwamizawa in March humidity is 81%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill wrapping around you, making traveling uncomfortable as every breath feels heavy and the cold penetration intensifies with the moisture in the air.

March Average Humidity in Iwamizawa

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

In Iwamizawa in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Iwamizawa, you can refer to this Hourly UV Index in Iwamizawa.

Maximum UV Index Levels in Iwamizawa for March

The chart shows the monthly maximum UV Index (UVI) for Iwamizawa 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 Iwamizawa typically reaches 6, which falls under the high exposure category.

Data source: Iwamizawa 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 Iwamizawa Compares to Other Months

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

This table compares monthly weather conditions in Iwamizawa, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	48 mm (1.9 inches)	84%	low
February Weather	-5°C (24°F)	61 mm (2.4 inches)	83%	moderate
March Weather	1°C (34°F)	75 mm (2.9 inches)	81%	high
April Weather	7°C (44°F)	72 mm (2.8 inches)	81%	high
May Weather	13°C (55°F)	89 mm (3.5 inches)	86%	very high
June Weather	16°C (61°F)	91 mm (3.6 inches)	87%	very high
July Weather	20°C (69°F)	84 mm (3.3 inches)	93%	very high
August Weather	21°C (70°F)	164 mm (6.5 inches)	95%	very high
September Weather	18°C (64°F)	85 mm (3.3 inches)	88%	very high
October Weather	11°C (53°F)	120 mm (4.7 inches)	83%	moderate
November Weather	5°C (41°F)	115 mm (4.5 inches)	79%	moderate
December Weather	-3°C (27°F)	84 mm (3.3 inches)	80%	low