January Weather in Saga, Japan

Last updated: August 23, 2025

In Saga, Japan, the average temperature for January hovers around 6°C (44°F). During this time, temperatures can dip as low as -3°C (26°F), while reaching a maximum of 17°C (64°F). Expect 56 mm (2.2 in) of precipitation over about 7 days, accompanied by an average humidity of 75%.

January Temperature in Saga

In January in Saga, the average temperature is 6°C (44°F). Maximum temperatures can reach 17°C (64°F), while minimums can dip as low as -3°C (26°F). Therefore, be sure to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Saga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saga, January typically has an average temperature of 6°C (44°F), with highs reaching up to 17°C (64°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Saga

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

January Precipitation Trends in Saga

The chart displays monthly precipitation patterns in Saga, 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 Saga, 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.

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Millimeters (mm) Inches (in)

January Humidity in Saga

In Saga in January humidity is 75%. With an average temperature of 6°C (44°F), this humidity feels like a chilly, damp blanket wrapping around you, making travel less enjoyable as the moisture clings to your skin and seeps into your clothes, leaving you feeling uncomfortable and clammy.

January Average Humidity in Saga

This chart illustrates the average monthly humidity levels in Saga, 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 Saga is approximately 75%, 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 Saga

In Saga 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 Saga for better planning.

Maximum UV Index Levels in Saga for January

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

Data source: Saga 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 Saga Compares to Other Months

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

This table compares monthly weather conditions in Saga, 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 (44°F)	56 mm (2.2 inches)	75%	moderate
February Weather	7°C (45°F)	82 mm (3.2 inches)	71%	high
March Weather	11°C (52°F)	135 mm (5.3 inches)	71%	very high
April Weather	15°C (59°F)	127 mm (5.0 inches)	78%	extreme
May Weather	20°C (68°F)	192 mm (7.6 inches)	84%	extreme
June Weather	23°C (74°F)	219 mm (8.6 inches)	86%	extreme
July Weather	27°C (80°F)	393 mm (15.5 inches)	92%	extreme
August Weather	28°C (83°F)	325 mm (12.8 inches)	91%	extreme
September Weather	24°C (76°F)	215 mm (8.5 inches)	84%	extreme
October Weather	19°C (67°F)	119 mm (4.7 inches)	83%	high
November Weather	13°C (56°F)	61 mm (2.4 inches)	81%	high
December Weather	8°C (47°F)	74 mm (2.9 inches)	79%	moderate