January Weather in Okazaki, Japan

Last updated: August 23, 2025

In January, the average temperature in Okazaki, Japan hovers around 4°C (40°F). Expect minimum temperatures to dip as low as -3°C (26°F), while the maximum can reach up to 16°C (61°F). During this period, the area typically receives about 52 mm (2.0 in) of precipitation spread over 5 days, accompanied by an average humidity of 82%, creating a cool and damp environment.

January Temperature in Okazaki

In January in Okazaki, the average temperature is 4°C (40°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -3°C (26°F). This climate suggests that travelers should pack layered clothing to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Okazaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Okazaki, January typically has an average temperature of 4°C (40°F), with highs reaching up to 16°C (61°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Okazaki

In Okazaki in January, the precipitation amount is 52 mm (2.0 in) over a span of 5 days.

January Precipitation Trends in Okazaki

The chart displays monthly precipitation patterns in Okazaki, 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 Okazaki, January typically receives around 52 mm (2.0 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 Okazaki

In Okazaki in January, humidity is 82%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that lingers in the air, making travel slightly uncomfortable as the cold penetrates through layers of clothing, often leaving you feeling chilled and clammy.

January Average Humidity in Okazaki

This chart illustrates the average monthly humidity levels in Okazaki, 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 Okazaki is approximately 82%, 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 Okazaki

In Okazaki 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 Okazaki for better planning.

Maximum UV Index Levels in Okazaki for January

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

Data source: Okazaki 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 Okazaki Compares to Other Months

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

This table compares monthly weather conditions in Okazaki, 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)	52 mm (2.0 inches)	82%	moderate
February Weather	5°C (42°F)	66 mm (2.6 inches)	79%	high
March Weather	10°C (50°F)	153 mm (6.0 inches)	74%	very high
April Weather	14°C (58°F)	171 mm (6.7 inches)	76%	very high
May Weather	19°C (66°F)	196 mm (7.7 inches)	83%	extreme
June Weather	22°C (72°F)	214 mm (8.4 inches)	87%	extreme
July Weather	26°C (79°F)	447 mm (17.6 inches)	93%	extreme
August Weather	28°C (82°F)	244 mm (9.6 inches)	91%	extreme
September Weather	24°C (75°F)	225 mm (8.8 inches)	87%	very high
October Weather	18°C (65°F)	262 mm (10.3 inches)	85%	high
November Weather	12°C (55°F)	61 mm (2.4 inches)	83%	moderate
December Weather	7°C (45°F)	62 mm (2.4 inches)	83%	moderate