January Weather in Ama, Japan

Last updated: August 23, 2025

In January, the average temperature in Ama, Japan hovers around 8°C (46°F), with a minimum dipping to -1°C (30°F) and a maximum reaching 17°C (62°F). Expect substantial precipitation during this period, with approximately 120 mm (4.7 in) falling over 18 days. Additionally, the air maintains an average humidity level of 82%, creating a distinct and somewhat damp climate.

January Temperature in Ama

In January in Ama, the average temperature is 8°C (46°F). Maximum temperatures can reach 17°C (62°F), while minimums can drop as low as -1°C (30°F). Be prepared for a mix of mild days and chilly nights when visiting during this time.

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

The chart illustrates January temperature patterns in Ama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ama, January typically has an average temperature of 8°C (46°F), with highs reaching up to 17°C (62°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in Ama

In Ama in January, the precipitation amount reaches 120 mm (4.7 in) over the course of 18 days.

January Precipitation Trends in Ama

The chart displays monthly precipitation patterns in Ama, 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 Ama, January typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 18 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 Ama

In Ama in January humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.

January Average Humidity in Ama

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

In Ama 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 Ama, you can check the information here.

Maximum UV Index Levels in Ama for January

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

Data source: Ama 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 Ama Compares to Other Months

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

This table compares monthly weather conditions in Ama, 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 (46°F)	120 mm (4.7 inches)	82%	moderate
February Weather	7°C (46°F)	115 mm (4.5 inches)	79%	moderate
March Weather	10°C (51°F)	124 mm (4.9 inches)	73%	high
April Weather	13°C (56°F)	111 mm (4.4 inches)	74%	very high
May Weather	17°C (63°F)	99 mm (3.9 inches)	84%	very high
June Weather	20°C (69°F)	147 mm (5.8 inches)	86%	extreme
July Weather	25°C (77°F)	248 mm (9.8 inches)	92%	extreme
August Weather	27°C (81°F)	197 mm (7.7 inches)	92%	extreme
September Weather	24°C (76°F)	211 mm (8.3 inches)	87%	very high
October Weather	20°C (68°F)	137 mm (5.4 inches)	85%	high
November Weather	15°C (59°F)	64 mm (2.5 inches)	84%	moderate
December Weather	10°C (51°F)	143 mm (5.6 inches)	82%	moderate