January Weather in Maruoka, Japan

Last updated: August 23, 2025

In January, the average temperature in Maruoka, Japan hovers around 5°C (42°F). Daily temperatures can swing between a brisk -1°C (30°F) and a mild 16°C (60°F). Expect 223 mm (8.8 in) of precipitation over 22 days, contributing to an average humidity level of 80%.

January Temperature in Maruoka

In January in Maruoka, the average temperature is 5°C (42°F). The maximum can reach 16°C (60°F), while the minimum can be as low as -1°C (30°F). Pack accordingly for cool to mildly warm days, with the possibility of chilly evenings.

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

The chart illustrates January temperature patterns in Maruoka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Maruoka, January typically has an average temperature of 5°C (42°F), with highs reaching up to 16°C (60°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in Maruoka

In Maruoka in January, the total precipitation amount is 223 mm (8.8 in), spread over the course of 22 days.

January Precipitation Trends in Maruoka

The chart displays monthly precipitation patterns in Maruoka, 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 Maruoka, January typically receives around 223 mm (8.8 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 Maruoka

In Maruoka in January humidity is 80%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that can seep into your bones, making outdoor adventures uncomfortable and urging travelers to seek warm shelter often.

January Average Humidity in Maruoka

This chart illustrates the average monthly humidity levels in Maruoka, 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 Maruoka is approximately 80%, 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 Maruoka

In Maruoka 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 Maruoka for better planning.

Maximum UV Index Levels in Maruoka for January

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

Data source: Maruoka 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 Maruoka Compares to Other Months

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

This table compares monthly weather conditions in Maruoka, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	223 mm (8.8 inches)	80%	moderate
February Weather	6°C (42°F)	180 mm (7.1 inches)	78%	moderate
March Weather	9°C (48°F)	160 mm (6.3 inches)	76%	very high
April Weather	12°C (54°F)	174 mm (6.9 inches)	77%	very high
May Weather	17°C (63°F)	146 mm (5.8 inches)	85%	very high
June Weather	21°C (70°F)	160 mm (6.3 inches)	89%	extreme
July Weather	25°C (78°F)	317 mm (12.5 inches)	93%	extreme
August Weather	27°C (81°F)	252 mm (9.9 inches)	92%	extreme
September Weather	24°C (75°F)	218 mm (8.6 inches)	84%	very high
October Weather	19°C (66°F)	208 mm (8.2 inches)	81%	high
November Weather	14°C (57°F)	163 mm (6.4 inches)	77%	moderate
December Weather	8°C (47°F)	269 mm (10.6 inches)	79%	moderate