January Weather in Nantan, Japan

Last updated: August 23, 2025

In January, the average temperature in Nantan, Japan hovers around 4°C (39°F). Expect a chilly minimum of -7°C (20°F) and a pleasant maximum of 16°C (60°F). With an average humidity level of 82%, be prepared for a damp atmosphere. Also, anticipate around 52 mm (2.1 in) of precipitation spread over 8 days, making it wise to pack an umbrella!

January Temperature in Nantan

In January in Nantan, the average temperature is 4°C (39°F). Maximums can reach 16°C (60°F), while minimums can drop as low as -7°C (20°F). Travelers should be prepared for chilly weather and pack accordingly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Nantan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nantan, January typically has an average temperature of 4°C (39°F), with highs reaching up to 16°C (60°F) and lows dropping to around -7°C (20°F).

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

January Precipitation in Nantan

In Nantan in January, the total precipitation amount is 52 mm (2.1 in) over the course of 8 days.

January Precipitation Trends in Nantan

The chart displays monthly precipitation patterns in Nantan, 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 Nantan, January typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 8 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 Nantan

In Nantan in January, humidity is 82%. With an average temperature of 4°C (39°F), this humidity feels like a chill that seeps into your bones, making it uncomfortable for traveling as you find yourself bundled up, yet still damp and cold.

January Average Humidity in Nantan

This chart illustrates the average monthly humidity levels in Nantan, 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 Nantan is approximately 82%, 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 Nantan

In Nantan in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Nantan for better planning.

Maximum UV Index Levels in Nantan for January

The chart shows the monthly maximum UV Index (UVI) for Nantan 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 Nantan typically reaches 4, which falls under the moderate exposure category.

Data source: Nantan 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 Nantan Compares to Other Months

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

This table compares monthly weather conditions in Nantan, 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 (39°F)	52 mm (2.1 inches)	82%	moderate
February Weather	4°C (40°F)	62 mm (2.4 inches)	79%	high
March Weather	9°C (48°F)	120 mm (4.7 inches)	74%	very high
April Weather	13°C (56°F)	155 mm (6.1 inches)	76%	very high
May Weather	18°C (65°F)	151 mm (6.0 inches)	83%	extreme
June Weather	22°C (71°F)	158 mm (6.2 inches)	87%	extreme
July Weather	26°C (79°F)	341 mm (13.4 inches)	93%	extreme
August Weather	28°C (82°F)	238 mm (9.4 inches)	91%	extreme
September Weather	23°C (74°F)	193 mm (7.6 inches)	87%	very high
October Weather	18°C (64°F)	243 mm (9.6 inches)	85%	high
November Weather	12°C (53°F)	46 mm (1.8 inches)	83%	moderate
December Weather	6°C (43°F)	64 mm (2.5 inches)	83%	moderate