January Weather in Rankoshimachi, Japan

Last updated: August 23, 2025

In January, the average temperature in Rankoshimachi, Japan hovers around -4°C (24°F), making it a chilly time of year. Be prepared for temperature swings, with lows dipping to -15°C (5°F) and highs reaching up to 4°C (40°F). Expect around 74 mm (2.9 in) of precipitation spread over 17 days, accompanied by a fairly high average humidity of 84%. Bundle up and enjoy the crisp atmosphere!

January Temperature in Rankoshimachi

In January in Rankoshimachi, the average temperature is -4°C (24°F). The maximum can reach 4°C (40°F) and the minimum can drop as low as -15°C (5°F). Be prepared for chilly weather and dress warmly if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Rankoshimachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rankoshimachi, January typically has an average temperature of -4°C (24°F), with highs reaching up to 4°C (40°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Rankoshimachi

In Rankoshimachi in January, the precipitation amount is 74 mm (2.9 in) distributed over 17 days.

January Precipitation Trends in Rankoshimachi

The chart displays monthly precipitation patterns in Rankoshimachi, 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 Rankoshimachi, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 17 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 Rankoshimachi

In Rankoshimachi in January humidity is 84%. With an average temperature of -4°C (24°F), this humidity feels like an uninviting chill that seeps into your bones, making outdoor activities uncomfortable and travel quite challenging.

January Average Humidity in Rankoshimachi

This chart illustrates the average monthly humidity levels in Rankoshimachi, 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 Rankoshimachi is approximately 84%, 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 Rankoshimachi

In Rankoshimachi in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rankoshimachi, you can visit Hourly UV Index in Rankoshimachi.

Maximum UV Index Levels in Rankoshimachi for January

The chart shows the monthly maximum UV Index (UVI) for Rankoshimachi 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 Rankoshimachi typically reaches 2, which falls under the low exposure category.

Data source: Rankoshimachi 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 Rankoshimachi Compares to Other Months

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

This table compares monthly weather conditions in Rankoshimachi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	74 mm (2.9 inches)	84%	low
February Weather	-4°C (25°F)	81 mm (3.2 inches)	83%	moderate
March Weather	1°C (33°F)	93 mm (3.7 inches)	81%	high
April Weather	5°C (41°F)	89 mm (3.5 inches)	81%	high
May Weather	11°C (52°F)	84 mm (3.3 inches)	86%	very high
June Weather	15°C (59°F)	110 mm (4.3 inches)	87%	very high
July Weather	20°C (68°F)	100 mm (3.9 inches)	93%	very high
August Weather	21°C (69°F)	147 mm (5.8 inches)	95%	very high
September Weather	18°C (64°F)	131 mm (5.2 inches)	88%	very high
October Weather	11°C (53°F)	127 mm (5.0 inches)	83%	moderate
November Weather	5°C (41°F)	136 mm (5.4 inches)	79%	moderate
December Weather	-2°C (28°F)	116 mm (4.6 inches)	80%	low