January Weather in Ijuin, Japan

Last updated: August 23, 2025

In January, the average temperature in Ijuin, Japan hovers around 9°C (49°F). Expect a minimum of -2°C (29°F) and a maximum of 21°C (69°F) throughout the month. With an average humidity of 72%, you'll also encounter about 53 mm (2.1 in) of precipitation over 6 days. Enjoy the refreshing atmosphere!

January Temperature in Ijuin

In January, in Ijuin, the average temperature is 9°C (49°F). Maximums can reach 21°C (69°F), while minimums can drop as low as -2°C (29°F). This makes Ijuin a destination with a refreshing climate, perfect for travelers looking to experience a mix of mild temperatures and cooler days.

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

The chart illustrates January temperature patterns in Ijuin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ijuin, January typically has an average temperature of 9°C (49°F), with highs reaching up to 21°C (69°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in Ijuin

In Ijuin in January, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

January Precipitation Trends in Ijuin

The chart displays monthly precipitation patterns in Ijuin, 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 Ijuin, January typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Ijuin

In Ijuin in January, humidity is 72%. With an average temperature of 9°C (49°F), this humidity feels like a chilly blanket wrapped around you, making travel feel damp and somewhat uncomfortable as you navigate the streets, heightening your awareness of every breeze.

January Average Humidity in Ijuin

This chart illustrates the average monthly humidity levels in Ijuin, 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 Ijuin is approximately 72%, 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 Ijuin

In Ijuin in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Ijuin.

Maximum UV Index Levels in Ijuin for January

The chart shows the monthly maximum UV Index (UVI) for Ijuin 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 Ijuin typically reaches 5, which falls under the moderate exposure category.

Data source: Ijuin 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 Ijuin Compares to Other Months

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

This table compares monthly weather conditions in Ijuin, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	53 mm (2.1 inches)	72%	moderate
February Weather	10°C (50°F)	103 mm (4.0 inches)	68%	high
March Weather	13°C (56°F)	170 mm (6.7 inches)	72%	very high
April Weather	17°C (63°F)	147 mm (5.8 inches)	79%	extreme
May Weather	21°C (70°F)	260 mm (10.2 inches)	83%	extreme
June Weather	24°C (75°F)	423 mm (16.7 inches)	86%	extreme
July Weather	27°C (81°F)	403 mm (15.9 inches)	90%	extreme
August Weather	28°C (84°F)	192 mm (7.6 inches)	85%	extreme
September Weather	26°C (79°F)	254 mm (10.0 inches)	80%	extreme
October Weather	22°C (71°F)	137 mm (5.4 inches)	78%	very high
November Weather	16°C (61°F)	97 mm (3.8 inches)	76%	high
December Weather	11°C (51°F)	82 mm (3.2 inches)	74%	moderate