January Weather in Niitsu-honcho, Japan

Last updated: August 23, 2025

In January, the average temperature in Niitsu-honcho, Japan hovers around 3°C (38°F), with nightly lows potentially dipping to -7°C (20°F) and daytime highs reaching up to 12°C (55°F). Visitors can expect a fair amount of rain, with 165 mm (6.5 in) of precipitation spread across 22 days. The climate is notably humid, with an average humidity level of 88%.

January Temperature in Niitsu-honcho

In January in Niitsu-honcho, the average temperature is 3°C (38°F). Maximum temperatures can reach 12°C (55°F), while the minimum can drop as low as -7°C (20°F). Be prepared for chilly weather and pack warm clothing if you're planning to visit during this time.

January Weather in Niitsu-honcho: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Niitsu-honcho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Niitsu-honcho, January typically has an average temperature of 3°C (38°F), with highs reaching up to 12°C (55°F) and lows dropping to around -7°C (20°F).

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

January Precipitation in Niitsu-honcho

In Niitsu-honcho in January, the total precipitation amount is 165 mm (6.5 in) spread over 22 days.

January Precipitation Trends in Niitsu-honcho

The chart displays monthly precipitation patterns in Niitsu-honcho, 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 Niitsu-honcho, January typically receives around 165 mm (6.5 inches) of precipitation spread over approximately 22 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 Niitsu-honcho

In Niitsu-honcho in January, humidity is 88%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

January Average Humidity in Niitsu-honcho

This chart illustrates the average monthly humidity levels in Niitsu-honcho, 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 Niitsu-honcho is approximately 88%, 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 Niitsu-honcho

In Niitsu-honcho 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 Niitsu-honcho, you can check the information here.

Maximum UV Index Levels in Niitsu-honcho for January

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

Data source: Niitsu-honcho 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 Niitsu-honcho Compares to Other Months

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

This table compares monthly weather conditions in Niitsu-honcho, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	165 mm (6.5 inches)	88%	moderate
February Weather	4°C (39°F)	132 mm (5.2 inches)	86%	moderate
March Weather	7°C (46°F)	123 mm (4.8 inches)	81%	high
April Weather	12°C (53°F)	113 mm (4.4 inches)	78%	very high
May Weather	18°C (64°F)	107 mm (4.2 inches)	81%	very high
June Weather	21°C (70°F)	102 mm (4.0 inches)	88%	very high
July Weather	26°C (79°F)	261 mm (10.3 inches)	92%	extreme
August Weather	27°C (82°F)	213 mm (8.4 inches)	92%	extreme
September Weather	23°C (74°F)	145 mm (5.7 inches)	89%	very high
October Weather	17°C (64°F)	155 mm (6.1 inches)	87%	high
November Weather	11°C (53°F)	153 mm (6.0 inches)	85%	moderate
December Weather	6°C (43°F)	210 mm (8.3 inches)	86%	moderate