January Weather in Ichihara, Japan

Last updated: August 23, 2025

In January, the average temperature in Ichihara, Japan hovers around 6°C (43°F). Expect chilly days, with minimums dipping to -2°C (28°F) and maximums reaching 16°C (61°F). Keep an umbrella handy, as the area receives about 63 mm (2.5 in) of precipitation over 5 days. Additionally, the average humidity sits at a comfortable 76%, adding a touch of dampness to the air.

January Temperature in Ichihara

In January in Ichihara, the average temperature is 6°C (43°F), with maximums reaching up to 16°C (61°F) and minimums dipping as low as -2°C (28°F). This range makes it advisable for travelers to pack layers to stay comfortable while exploring the area.

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

The chart illustrates January temperature patterns in Ichihara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ichihara, January typically has an average temperature of 6°C (43°F), with highs reaching up to 16°C (61°F) and lows dropping to around -2°C (28°F).

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

January Precipitation in Ichihara

In Ichihara in January, the precipitation amount is 63 mm (2.5 in) spread over a period of 5 days.

January Precipitation Trends in Ichihara

The chart displays monthly precipitation patterns in Ichihara, 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 Ichihara, January typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 5 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 Ichihara

In Ichihara in January, humidity is 76%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that clings to your clothes and makes even short outings feel less inviting, leaving travelers reaching for extra layers to stay comfortable while exploring.

January Average Humidity in Ichihara

This chart illustrates the average monthly humidity levels in Ichihara, 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 Ichihara is approximately 76%, 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 Ichihara

In Ichihara 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 Ichihara, you can check the information here.

Maximum UV Index Levels in Ichihara for January

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

Data source: Ichihara 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 Ichihara Compares to Other Months

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

This table compares monthly weather conditions in Ichihara, 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 (43°F)	63 mm (2.5 inches)	76%	moderate
February Weather	7°C (44°F)	50 mm (2.0 inches)	74%	moderate
March Weather	10°C (50°F)	162 mm (6.4 inches)	70%	high
April Weather	14°C (57°F)	137 mm (5.4 inches)	74%	very high
May Weather	19°C (66°F)	147 mm (5.8 inches)	81%	very high
June Weather	22°C (71°F)	190 mm (7.5 inches)	88%	extreme
July Weather	25°C (78°F)	226 mm (8.9 inches)	93%	extreme
August Weather	27°C (81°F)	118 mm (4.7 inches)	90%	extreme
September Weather	24°C (75°F)	232 mm (9.1 inches)	86%	very high
October Weather	19°C (66°F)	313 mm (12.3 inches)	83%	high
November Weather	14°C (58°F)	119 mm (4.7 inches)	80%	moderate
December Weather	9°C (48°F)	80 mm (3.2 inches)	78%	moderate