January Weather in Okunoya, Japan

Last updated: August 23, 2025

In January, the average temperature in Okunoya, Japan hovers around 6°C (43°F). Expect chilly lows of -3°C (27°F) and pleasant highs of 15°C (60°F). With 53 mm (2.1 in) of rainfall spread over 6 days, you might want to pack an umbrella. The air can feel quite damp, with an average humidity of 76%!

January Temperature in Okunoya

In January in Okunoya, the average temperature is 6°C (43°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -3°C (27°F). Be prepared for a range of temperatures and pack accordingly for your trip!

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

The chart illustrates January temperature patterns in Okunoya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Okunoya, January typically has an average temperature of 6°C (43°F), with highs reaching up to 15°C (60°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Okunoya

In Okunoya in January, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

January Precipitation Trends in Okunoya

The chart displays monthly precipitation patterns in Okunoya, 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 Okunoya, January typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 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 Okunoya

In Okunoya 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 Okunoya

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

In Okunoya 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 Okunoya, you can check the information here.

Maximum UV Index Levels in Okunoya for January

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

Data source: Okunoya 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 Okunoya Compares to Other Months

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

This table compares monthly weather conditions in Okunoya, 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)	53 mm (2.1 inches)	76%	moderate
February Weather	6°C (44°F)	50 mm (2.0 inches)	75%	moderate
March Weather	10°C (50°F)	150 mm (5.9 inches)	72%	high
April Weather	13°C (56°F)	129 mm (5.1 inches)	73%	very high
May Weather	18°C (65°F)	143 mm (5.6 inches)	80%	very high
June Weather	21°C (70°F)	155 mm (6.1 inches)	87%	extreme
July Weather	24°C (76°F)	209 mm (8.2 inches)	92%	extreme
August Weather	26°C (80°F)	109 mm (4.3 inches)	90%	very high
September Weather	23°C (74°F)	176 mm (6.9 inches)	84%	very high
October Weather	19°C (66°F)	258 mm (10.2 inches)	80%	high
November Weather	14°C (57°F)	102 mm (4.0 inches)	77%	moderate
December Weather	8°C (47°F)	73 mm (2.9 inches)	77%	moderate