January Weather in Tatsuno, Japan

Last updated: August 23, 2025

In January, the average temperature in Tatsuno, Japan hovers around 6°C (44°F), with a minimum of -1°C (31°F) and a maximum reaching 15°C (59°F). Be prepared for some rain, as 42 mm (1.7 in) of precipitation is expected over 6 days. Additionally, you can anticipate a high level of humidity at 82%, making it feel quite crisp!

January Temperature in Tatsuno

In January in Tatsuno, the average temperature is 6°C (44°F). Maximums can reach 15°C (59°F), and minimums can be as low as -1°C (31°F). Be sure to pack layers to stay comfortable while exploring the diverse weather conditions!

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

The chart illustrates January temperature patterns in Tatsuno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tatsuno, January typically has an average temperature of 6°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 Tatsuno generated using information from the Copernicus Climate Change Service.

January Precipitation in Tatsuno

In Tatsuno in January, the total precipitation amount is 42 mm (1.7 in) spread over 6 days.

January Precipitation Trends in Tatsuno

The chart displays monthly precipitation patterns in Tatsuno, 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 Tatsuno, January typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 6 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 Tatsuno

In Tatsuno in January humidity is 82%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that settles into your bones, making travel uncomfortable as every step feels heavy with moisture and the cool air seems to cling to your skin.

January Average Humidity in Tatsuno

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

In Tatsuno 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 Tatsuno for better planning.

Maximum UV Index Levels in Tatsuno for January

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

Data source: Tatsuno 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 Tatsuno Compares to Other Months

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

This table compares monthly weather conditions in Tatsuno, 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)	42 mm (1.7 inches)	82%	moderate
February Weather	6°C (44°F)	55 mm (2.2 inches)	79%	moderate
March Weather	9°C (49°F)	109 mm (4.3 inches)	73%	very high
April Weather	13°C (56°F)	132 mm (5.2 inches)	74%	extreme
May Weather	18°C (64°F)	134 mm (5.3 inches)	84%	extreme
June Weather	21°C (71°F)	160 mm (6.3 inches)	86%	extreme
July Weather	25°C (78°F)	309 mm (12.2 inches)	92%	extreme
August Weather	27°C (81°F)	180 mm (7.1 inches)	92%	extreme
September Weather	24°C (76°F)	228 mm (9.0 inches)	87%	very high
October Weather	20°C (68°F)	229 mm (9.0 inches)	85%	high
November Weather	14°C (58°F)	43 mm (1.7 inches)	84%	moderate
December Weather	9°C (49°F)	56 mm (2.2 inches)	82%	moderate