January Weather in Joso, Japan

Last updated: August 23, 2025

In January, the average temperature in Joso, Japan hovers around 4°C (40°F). Expect temperatures to range from a chilly -8°C (18°F) at the lowest to a pleasant 17°C (63°F) at the highest. During this month, precipitation averages 42 mm (1.6 in) over 5 days, with a relatively high average humidity of 76%. Prepare accordingly for a mix of brisk days and the potential for rain!

January Temperature in Joso

In January, in Joso, the average temperature is 4°C (40°F). Maximum temperatures can reach 17°C (63°F), while minimums can drop to as low as -8°C (18°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates January temperature patterns in Joso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joso, January typically has an average temperature of 4°C (40°F), with highs reaching up to 17°C (63°F) and lows dropping to around -8°C (18°F).

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

January Precipitation in Joso

In Joso in January, the precipitation amount is 42 mm (1.6 in) over a period of 5 days.

January Precipitation Trends in Joso

The chart displays monthly precipitation patterns in Joso, 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 Joso, January typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 5 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 Joso

In Joso in January humidity is 76%. With an average temperature of 4°C (40°F), this humidity feels like a chilly embrace, making travel feel damp and slightly clammy, as the cool air clings to your skin, requiring extra layers to stay comfortable while experiencing the sights.

January Average Humidity in Joso

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

In Joso 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 Joso, you can check the information here.

Maximum UV Index Levels in Joso for January

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

Data source: Joso 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 Joso Compares to Other Months

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

This table compares monthly weather conditions in Joso, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	42 mm (1.6 inches)	76%	moderate
February Weather	6°C (42°F)	39 mm (1.5 inches)	74%	moderate
March Weather	10°C (50°F)	123 mm (4.9 inches)	70%	high
April Weather	14°C (58°F)	109 mm (4.3 inches)	74%	very high
May Weather	19°C (67°F)	121 mm (4.8 inches)	81%	very high
June Weather	22°C (72°F)	142 mm (5.6 inches)	88%	extreme
July Weather	26°C (79°F)	225 mm (8.9 inches)	93%	extreme
August Weather	28°C (82°F)	111 mm (4.4 inches)	90%	very high
September Weather	24°C (75°F)	171 mm (6.7 inches)	86%	very high
October Weather	18°C (65°F)	238 mm (9.4 inches)	83%	high
November Weather	13°C (55°F)	72 mm (2.8 inches)	80%	moderate
December Weather	7°C (44°F)	54 mm (2.1 inches)	78%	moderate