January Weather in Nirasaki, Japan

Last updated: August 23, 2025

In January, the average temperature in Nirasaki, Japan hovers around -1°C (30°F). Expect chilly conditions as temperatures can dip as low as -16°C (3°F), while the mercury may rise to a maximum of 11°C (52°F). With an average precipitation of 48 mm (1.9 in) spread over 6 days, and humidity levels around 76%, it's a time when cozy indoor activities are ideal.

January Temperature in Nirasaki

In January in Nirasaki, the average temperature is -1°C (30°F), with maximums reaching up to 11°C (52°F) and minimums dropping as low as -16°C (3°F). Travelers should be prepared for cold weather and varying temperatures during this time.

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

The chart illustrates January temperature patterns in Nirasaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nirasaki, January typically has an average temperature of -1°C (30°F), with highs reaching up to 11°C (52°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Nirasaki

In Nirasaki in January, the precipitation amount is 48 mm (1.9 in) distributed over 6 days.

January Precipitation Trends in Nirasaki

The chart displays monthly precipitation patterns in Nirasaki, 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 Nirasaki, January typically receives around 48 mm (1.9 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 Nirasaki

In Nirasaki in January, humidity is 76%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates your layers, making outdoor activities less enjoyable and prompting travelers to seek warmth and shelter more often than not.

January Average Humidity in Nirasaki

This chart illustrates the average monthly humidity levels in Nirasaki, 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 Nirasaki is approximately 76%, 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 Nirasaki

In Nirasaki 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 Nirasaki for better planning.

Maximum UV Index Levels in Nirasaki for January

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

Data source: Nirasaki 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 Nirasaki Compares to Other Months

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

This table compares monthly weather conditions in Nirasaki, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	48 mm (1.9 inches)	76%	moderate
February Weather	0°C (32°F)	60 mm (2.4 inches)	74%	high
March Weather	4°C (40°F)	136 mm (5.4 inches)	70%	very high
April Weather	9°C (48°F)	129 mm (5.1 inches)	74%	very high
May Weather	14°C (58°F)	138 mm (5.4 inches)	81%	extreme
June Weather	17°C (64°F)	147 mm (5.8 inches)	88%	extreme
July Weather	21°C (70°F)	293 mm (11.6 inches)	93%	extreme
August Weather	23°C (73°F)	150 mm (5.9 inches)	90%	extreme
September Weather	18°C (65°F)	183 mm (7.2 inches)	86%	very high
October Weather	13°C (55°F)	277 mm (10.9 inches)	83%	high
November Weather	7°C (45°F)	52 mm (2.0 inches)	80%	high
December Weather	1°C (35°F)	54 mm (2.1 inches)	78%	moderate