January Weather in Aira, Japan

Last updated: August 23, 2025

In January, the average temperature in Aira, Japan hovers around 8°C (47°F), offering a mild climate. Expect minimum temperatures to dip to -2°C (28°F) and can rise to a pleasant 19°C (67°F). With an average precipitation of 56 mm (2.2 in) spread over 7 days, it's wise to keep an umbrella handy. The humidity level sits at a comfortable 72%, making it a great time to explore the beauty of the region!

January Temperature in Aira

In January in Aira, the average temperature is 8°C (47°F), with maximums reaching up to 19°C (67°F) and minimums dropping as low as -2°C (28°F). This variation in temperature makes it essential to pack layered clothing for your trip.

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

The chart illustrates January temperature patterns in Aira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aira, January typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (67°F) and lows dropping to around -2°C (28°F).

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

January Precipitation in Aira

In Aira in January, the total precipitation amount is 56 mm (2.2 in) over a period of 7 days.

January Precipitation Trends in Aira

The chart displays monthly precipitation patterns in Aira, 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 Aira, January typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 7 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 Aira

In Aira in January, humidity is 72%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers and stay active to keep warm while exploring.

January Average Humidity in Aira

This chart illustrates the average monthly humidity levels in Aira, 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 Aira is approximately 72%, 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 Aira

In Aira in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Aira.

Maximum UV Index Levels in Aira for January

The chart shows the monthly maximum UV Index (UVI) for Aira 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 Aira typically reaches 5, which falls under the moderate exposure category.

Data source: Aira 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 Aira Compares to Other Months

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

This table compares monthly weather conditions in Aira, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	56 mm (2.2 inches)	72%	moderate
February Weather	9°C (48°F)	104 mm (4.1 inches)	68%	high
March Weather	13°C (55°F)	166 mm (6.5 inches)	72%	very high
April Weather	16°C (62°F)	156 mm (6.2 inches)	79%	extreme
May Weather	20°C (69°F)	265 mm (10.4 inches)	83%	extreme
June Weather	23°C (74°F)	406 mm (16.0 inches)	86%	extreme
July Weather	27°C (81°F)	446 mm (17.6 inches)	90%	extreme
August Weather	28°C (83°F)	213 mm (8.4 inches)	85%	extreme
September Weather	26°C (78°F)	258 mm (10.2 inches)	80%	extreme
October Weather	21°C (70°F)	137 mm (5.4 inches)	78%	very high
November Weather	15°C (60°F)	97 mm (3.8 inches)	76%	high
December Weather	10°C (50°F)	86 mm (3.4 inches)	74%	moderate