January Weather in Iwaizumi, Japan

Last updated: August 23, 2025

In January, the average temperature in Iwaizumi, Japan hovers around -2°C (29°F). Expect chilly conditions, with minimums dipping as low as -14°C (7°F) and maximums reaching 8°C (46°F). Prepare for approximately 49 mm (1.9 in) of precipitation over 9 days, accompanied by an average humidity level of 80%.

January Temperature in Iwaizumi

In January in Iwaizumi, the average temperature is -2°C (29°F). Maximum temperatures can reach 8°C (46°F), while minimums can drop as low as -14°C (7°F). Make sure to pack warm clothing if you're planning to visit during this chilly time of year.

January Weather in Iwaizumi: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Iwaizumi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iwaizumi, January typically has an average temperature of -2°C (29°F), with highs reaching up to 8°C (46°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Iwaizumi

In Iwaizumi in January, the total precipitation amount is 49 mm (1.9 in) spread over 9 days.

January Precipitation Trends in Iwaizumi

The chart displays monthly precipitation patterns in Iwaizumi, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Iwaizumi, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Iwaizumi

In Iwaizumi in January humidity is 80%. With an average temperature of -2°C (29°F), this humidity feels like a heavy, biting chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers to ward off both the cold and the dampness.

January Average Humidity in Iwaizumi

This chart illustrates the average monthly humidity levels in Iwaizumi, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Iwaizumi is approximately 80%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Iwaizumi

In Iwaizumi in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Iwaizumi, you can check the information here.

Maximum UV Index Levels in Iwaizumi for January

The chart shows the monthly maximum UV Index (UVI) for Iwaizumi in January, 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 January, the maximum UV index in Iwaizumi typically reaches 3, which falls under the moderate exposure category.

Data source: Iwaizumi January 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 January Weather in Iwaizumi Compares to Other Months

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

This table compares monthly weather conditions in Iwaizumi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	49 mm (1.9 inches)	80%	moderate
February Weather	-2°C (29°F)	67 mm (2.6 inches)	79%	moderate
March Weather	3°C (37°F)	102 mm (4.0 inches)	77%	high
April Weather	7°C (45°F)	119 mm (4.7 inches)	75%	very high
May Weather	13°C (55°F)	106 mm (4.2 inches)	80%	very high
June Weather	16°C (61°F)	108 mm (4.3 inches)	87%	extreme
July Weather	20°C (69°F)	178 mm (7.0 inches)	92%	very high
August Weather	22°C (71°F)	199 mm (7.8 inches)	92%	extreme
September Weather	18°C (65°F)	157 mm (6.2 inches)	86%	very high
October Weather	12°C (55°F)	200 mm (7.9 inches)	82%	high
November Weather	6°C (44°F)	45 mm (1.8 inches)	79%	moderate
December Weather	0°C (33°F)	63 mm (2.5 inches)	80%	moderate