January Weather in Ashiya, Japan

Last updated: August 23, 2025

In January, the average temperature in Ashiya, Japan hovers around 6°C (44°F). Temperatures can dip as low as -3°C (27°F) and rise to a maximum of 17°C (63°F). Expect about 53 mm (2.1 in) of precipitation over 8 days, with an average humidity of 75%.

January Temperature in Ashiya

In January in Ashiya, the average temperature is 6°C (44°F). The maximum can reach 17°C (63°F), while the minimum can dip as low as -3°C (27°F). This varied climate makes Ashiya an intriguing destination for travelers seeking both cool and mild weather experiences.

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

The chart illustrates January temperature patterns in Ashiya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashiya, January typically has an average temperature of 6°C (44°F), with highs reaching up to 17°C (63°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Ashiya

In Ashiya in January, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.

January Precipitation Trends in Ashiya

The chart displays monthly precipitation patterns in Ashiya, 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 Ashiya, January typically receives around 53 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Ashiya

In Ashiya in January humidity is 75%. With an average temperature of 6°C (44°F), this humidity feels like a chilly, damp blanket wrapping around you, making travel less enjoyable as the moisture clings to your skin and seeps into your clothes, leaving you feeling uncomfortable and clammy.

January Average Humidity in Ashiya

This chart illustrates the average monthly humidity levels in Ashiya, 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 Ashiya is approximately 75%, 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 Ashiya

In Ashiya 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 Ashiya for better planning.

Maximum UV Index Levels in Ashiya for January

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

Data source: Ashiya 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 Ashiya Compares to Other Months

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

This table compares monthly weather conditions in Ashiya, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	53 mm (2.1 inches)	75%	moderate
February Weather	7°C (45°F)	68 mm (2.7 inches)	71%	high
March Weather	11°C (53°F)	118 mm (4.7 inches)	71%	very high
April Weather	16°C (60°F)	109 mm (4.3 inches)	78%	extreme
May Weather	20°C (69°F)	135 mm (5.3 inches)	84%	extreme
June Weather	23°C (74°F)	180 mm (7.1 inches)	86%	extreme
July Weather	27°C (81°F)	298 mm (11.7 inches)	92%	extreme
August Weather	29°C (84°F)	255 mm (10.0 inches)	91%	extreme
September Weather	25°C (77°F)	202 mm (8.0 inches)	84%	extreme
October Weather	20°C (68°F)	110 mm (4.3 inches)	83%	high
November Weather	14°C (57°F)	43 mm (1.7 inches)	81%	high
December Weather	8°C (47°F)	59 mm (2.3 inches)	79%	moderate