January Weather in Yanaizu, Japan

Last updated: August 23, 2025

In Yanaizu, Japan, the average temperature in January hovers around -1°C (30°F), with potential lows of -11°C (13°F) and highs reaching 8°C (46°F). Expect about 157 mm (6.2 in) of precipitation spread over 22 days, accompanied by a high average humidity of 88%. Be prepared for chilly, wet conditions!

January Temperature in Yanaizu

In January in Yanaizu, the average temperature is -1°C (30°F), with a maximum that can reach 8°C (46°F) and a minimum that can drop as low as -11°C (13°F). It's advisable to prepare for chilly conditions if you're planning to visit during this time.

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

The chart illustrates January temperature patterns in Yanaizu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yanaizu, January typically has an average temperature of -1°C (30°F), with highs reaching up to 8°C (46°F) and lows dropping to around -11°C (13°F).

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

January Precipitation in Yanaizu

In Yanaizu in January, the total precipitation amount is 157 mm (6.2 in) over the span of 22 days.

January Precipitation Trends in Yanaizu

The chart displays monthly precipitation patterns in Yanaizu, 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 Yanaizu, January typically receives around 157 mm (6.2 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 Yanaizu

In Yanaizu in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

January Average Humidity in Yanaizu

This chart illustrates the average monthly humidity levels in Yanaizu, 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 Yanaizu 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 Yanaizu

In Yanaizu 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 Yanaizu, you can check the information here.

Maximum UV Index Levels in Yanaizu for January

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

Data source: Yanaizu 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 Yanaizu Compares to Other Months

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

This table compares monthly weather conditions in Yanaizu, 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 (30°F)	157 mm (6.2 inches)	88%	moderate
February Weather	-1°C (31°F)	155 mm (6.1 inches)	86%	moderate
March Weather	3°C (38°F)	147 mm (5.8 inches)	81%	very high
April Weather	9°C (48°F)	127 mm (5.0 inches)	78%	very high
May Weather	15°C (59°F)	111 mm (4.4 inches)	81%	very high
June Weather	18°C (65°F)	117 mm (4.6 inches)	88%	extreme
July Weather	23°C (73°F)	256 mm (10.1 inches)	92%	extreme
August Weather	24°C (76°F)	153 mm (6.0 inches)	92%	extreme
September Weather	19°C (67°F)	126 mm (5.0 inches)	89%	very high
October Weather	14°C (57°F)	168 mm (6.6 inches)	87%	high
November Weather	8°C (46°F)	100 mm (3.9 inches)	85%	moderate
December Weather	1°C (35°F)	176 mm (6.9 inches)	86%	moderate