January Weather in Toyonaka, Japan

Last updated: August 23, 2025

In January, the average temperature in Toyonaka, Japan hovers around 6°C (42°F). You can expect a chilly minimum of -3°C (26°F), while temperatures can rise to a pleasant maximum of 18°C (64°F). With an average humidity of 82%, be prepared for a bit of moisture in the air! During this month, anticipate about 46 mm (1.8 in) of precipitation spread over 6 days.

January Temperature in Toyonaka

In January in Toyonaka, the average temperature is 6°C (42°F), with maximums reaching up to 18°C (64°F) and minimums dropping as low as -3°C (26°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Toyonaka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Toyonaka, January typically has an average temperature of 6°C (42°F), with highs reaching up to 18°C (64°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Toyonaka

In Toyonaka in January, the precipitation amount is 46 mm (1.8 in) over a span of 6 days.

January Precipitation Trends in Toyonaka

The chart displays monthly precipitation patterns in Toyonaka, 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 Toyonaka, January typically receives around 46 mm (1.8 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 Toyonaka

In Toyonaka in January, humidity is 82%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and prompting travelers to seek cozy indoor spaces instead.

January Average Humidity in Toyonaka

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

In Toyonaka 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 Toyonaka for better planning.

Maximum UV Index Levels in Toyonaka for January

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

Data source: Toyonaka 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 Toyonaka Compares to Other Months

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

This table compares monthly weather conditions in Toyonaka, 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 (42°F)	46 mm (1.8 inches)	82%	moderate
February Weather	6°C (43°F)	60 mm (2.3 inches)	79%	high
March Weather	10°C (51°F)	109 mm (4.3 inches)	74%	very high
April Weather	15°C (59°F)	135 mm (5.3 inches)	76%	extreme
May Weather	20°C (69°F)	150 mm (5.9 inches)	83%	extreme
June Weather	24°C (75°F)	147 mm (5.8 inches)	87%	extreme
July Weather	28°C (82°F)	282 mm (11.1 inches)	93%	extreme
August Weather	29°C (85°F)	183 mm (7.2 inches)	91%	extreme
September Weather	25°C (78°F)	169 mm (6.7 inches)	87%	very high
October Weather	20°C (67°F)	230 mm (9.0 inches)	85%	high
November Weather	13°C (56°F)	44 mm (1.7 inches)	83%	moderate
December Weather	8°C (47°F)	57 mm (2.2 inches)	83%	moderate