January Weather in Ajigasawa, Japan

Last updated: August 23, 2025

In January, the average temperature in Ajigasawa, Japan hovers around -1°C (31°F), with extremes ranging from a brisk -10°C (14°F) to a milder 7°C (45°F). Expect 125 mm (4.9 in) of precipitation spread over 21 days, leading to an average humidity level of 79%. Prepare for chilly, damp conditions as you explore this captivating locale!

January Temperature in Ajigasawa

In January in Ajigasawa, the average temperature is -1°C (31°F), with a maximum that can reach 7°C (45°F) and a minimum that can drop as low as -10°C (14°F). Visitors should be prepared for cold weather conditions and pack accordingly for their trip.

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

The chart illustrates January temperature patterns in Ajigasawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ajigasawa, January typically has an average temperature of -1°C (31°F), with highs reaching up to 7°C (45°F) and lows dropping to around -10°C (14°F).

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

January Precipitation in Ajigasawa

In Ajigasawa in January, the precipitation amount is 125 mm (4.9 in), occurring over a span of 21 days.

January Precipitation Trends in Ajigasawa

The chart displays monthly precipitation patterns in Ajigasawa, 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 Ajigasawa, January typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 21 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 Ajigasawa

In Ajigasawa in January humidity is 79%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor adventures challenging as the cold moisture seeps into your clothes, leaving you feeling chilled to the bone.

January Average Humidity in Ajigasawa

This chart illustrates the average monthly humidity levels in Ajigasawa, 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 Ajigasawa is approximately 79%, 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 Ajigasawa

In Ajigasawa 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 Ajigasawa, you can check the information here.

Maximum UV Index Levels in Ajigasawa for January

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

Data source: Ajigasawa 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 Ajigasawa Compares to Other Months

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

This table compares monthly weather conditions in Ajigasawa, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	125 mm (4.9 inches)	79%	moderate
February Weather	0°C (32°F)	141 mm (5.6 inches)	78%	moderate
March Weather	3°C (38°F)	120 mm (4.7 inches)	77%	high
April Weather	8°C (46°F)	122 mm (4.8 inches)	78%	very high
May Weather	14°C (57°F)	115 mm (4.5 inches)	86%	very high
June Weather	18°C (64°F)	139 mm (5.5 inches)	91%	very high
July Weather	22°C (73°F)	130 mm (5.1 inches)	95%	very high
August Weather	24°C (75°F)	187 mm (7.4 inches)	97%	extreme
September Weather	20°C (68°F)	144 mm (5.7 inches)	89%	very high
October Weather	14°C (58°F)	192 mm (7.5 inches)	81%	high
November Weather	8°C (47°F)	151 mm (6.0 inches)	78%	moderate
December Weather	2°C (35°F)	211 mm (8.3 inches)	77%	low