January Weather in Ono, Japan

Last updated: August 23, 2025

In Ono, Japan, the average temperature in January hovers around 7°C (44°F). Visitors can expect a minimum of -1°C (31°F) and a maximum of 15°C (59°F). During this period, 41 mm (1.6 in) of precipitation typically falls over 5 days, resulting in a high average humidity of 82%. Prepare accordingly to make the most of your experience!

January Temperature in Ono

In January in Ono, the average temperature is 7°C (44°F). Maximum temperatures can reach 15°C (59°F), while minimums can drop as low as -1°C (31°F). Be prepared for a mix of cool and mild weather while exploring the area during this time.

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

The chart illustrates January temperature patterns in Ono, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ono, January typically has an average temperature of 7°C (44°F), with highs reaching up to 15°C (59°F) and lows dropping to around -1°C (31°F).

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

January Precipitation in Ono

In Ono in January, the precipitation amount is 41 mm (1.6 in) over a period of 5 days.

January Precipitation Trends in Ono

The chart displays monthly precipitation patterns in Ono, 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 Ono, January typically receives around 41 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Ono

In Ono in January, humidity is 82%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that seeps into your bones, making outdoor exploration feel damp and cumbersome.

January Average Humidity in Ono

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

In Ono 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 Ono for better planning.

Maximum UV Index Levels in Ono for January

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

Data source: Ono 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 Ono Compares to Other Months

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

This table compares monthly weather conditions in Ono, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	41 mm (1.6 inches)	82%	moderate
February Weather	7°C (44°F)	51 mm (2.0 inches)	79%	high
March Weather	10°C (51°F)	99 mm (3.9 inches)	73%	very high
April Weather	15°C (59°F)	122 mm (4.8 inches)	74%	extreme
May Weather	20°C (68°F)	138 mm (5.4 inches)	84%	extreme
June Weather	23°C (74°F)	140 mm (5.5 inches)	86%	extreme
July Weather	27°C (81°F)	302 mm (11.9 inches)	92%	extreme
August Weather	29°C (84°F)	187 mm (7.3 inches)	92%	extreme
September Weather	25°C (78°F)	205 mm (8.1 inches)	87%	very high
October Weather	20°C (68°F)	225 mm (8.9 inches)	85%	high
November Weather	14°C (58°F)	45 mm (1.8 inches)	84%	moderate
December Weather	9°C (49°F)	55 mm (2.2 inches)	82%	moderate