February Weather in Iiyama, Japan

Last updated: August 23, 2025

In February, the average temperature in Iiyama, Japan hovers around -1°C (30°F). Expect chilly conditions with a minimum dip of -14°C (7°F) and an occasional peak at 16°C (61°F). During this month, precipitation totals 129 mm (5.1 in) across 19 days, accompanied by an average humidity of 86%, creating a crisp and damp atmosphere.

February Temperature in Iiyama

In February in Iiyama, the average temperature is -1°C (30°F), with maximums reaching 16°C (61°F) and minimums dropping to as low as -14°C (7°F). Be prepared for a wide range of temperatures when traveling to Iiyama this month!

February Weather in Iiyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Iiyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iiyama, February typically has an average temperature of -1°C (30°F), with highs reaching up to 16°C (61°F) and lows dropping to around -14°C (7°F).

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

February Precipitation in Iiyama

In Iiyama in February, the precipitation amount is 129 mm (5.1 in) over the course of 19 days.

February Precipitation Trends in Iiyama

The chart displays monthly precipitation patterns in Iiyama, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Iiyama, February typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 19 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Iiyama

In Iiyama in February, humidity is 86%. With an average temperature of -1°C (30°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel much colder and more uncomfortable than the temperature suggests.

February Average Humidity in Iiyama

This chart illustrates the average monthly humidity levels in Iiyama, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Iiyama is approximately 86%, offering insight into how humid the weather typically is during this month.

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

February UV Index in Iiyama

In Iiyama in February, 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 Iiyama, you can refer to this Hourly UV Index in Iiyama.

Maximum UV Index Levels in Iiyama for February

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

Data source: Iiyama February 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 February Weather in Iiyama Compares to Other Months

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

This table compares monthly weather conditions in Iiyama, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	144 mm (5.7 inches)	88%	moderate
February Weather	-1°C (30°F)	129 mm (5.1 inches)	86%	high
March Weather	4°C (39°F)	133 mm (5.2 inches)	81%	very high
April Weather	9°C (48°F)	141 mm (5.5 inches)	78%	very high
May Weather	15°C (59°F)	160 mm (6.3 inches)	81%	extreme
June Weather	18°C (65°F)	171 mm (6.7 inches)	88%	extreme
July Weather	22°C (73°F)	341 mm (13.4 inches)	92%	extreme
August Weather	24°C (75°F)	198 mm (7.8 inches)	92%	extreme
September Weather	19°C (67°F)	194 mm (7.6 inches)	89%	very high
October Weather	13°C (56°F)	217 mm (8.5 inches)	87%	high
November Weather	7°C (44°F)	94 mm (3.7 inches)	85%	moderate
December Weather	1°C (34°F)	151 mm (6.0 inches)	86%	moderate