January Weather in Hayakawa, Japan

Last updated: August 23, 2025

In Hayakawa, Japan, the average temperature in January hovers around -1°C (30°F). Expect chilly nights with minimums dipping to -16°C (4°F), while daytime highs can reach a cozy 11°C (53°F). During this month, the region experiences an average precipitation of 65 mm (2.6 in) over 7 days, contributing to a humidity level of 76%. Be prepared for a brisk and damp winter atmosphere!

January Temperature in Hayakawa

In January in Hayakawa, the average temperature is -1°C (30°F). Maximums can reach 11°C (53°F), while minimums can drop as low as -16°C (4°F). Travelers should be prepared for chilly conditions and dress in layers to stay warm during their visit.

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

The chart illustrates January temperature patterns in Hayakawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayakawa, January typically has an average temperature of -1°C (30°F), with highs reaching up to 11°C (53°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Hayakawa

In Hayakawa in January, the total precipitation amount is 65 mm (2.6 in) over a span of 7 days.

January Precipitation Trends in Hayakawa

The chart displays monthly precipitation patterns in Hayakawa, 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 Hayakawa, January typically receives around 65 mm (2.6 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 Hayakawa

In Hayakawa 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 Hayakawa

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

In Hayakawa 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 Hayakawa for better planning.

Maximum UV Index Levels in Hayakawa for January

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

Data source: Hayakawa 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 Hayakawa Compares to Other Months

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

This table compares monthly weather conditions in Hayakawa, 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)	65 mm (2.6 inches)	76%	moderate
February Weather	0°C (32°F)	80 mm (3.1 inches)	74%	high
March Weather	4°C (40°F)	182 mm (7.2 inches)	70%	very high
April Weather	9°C (48°F)	179 mm (7.0 inches)	74%	very high
May Weather	14°C (57°F)	191 mm (7.5 inches)	81%	extreme
June Weather	17°C (63°F)	222 mm (8.7 inches)	88%	extreme
July Weather	21°C (70°F)	451 mm (17.8 inches)	93%	extreme
August Weather	23°C (73°F)	227 mm (8.9 inches)	90%	extreme
September Weather	19°C (66°F)	243 mm (9.6 inches)	86%	very high
October Weather	13°C (56°F)	330 mm (13.0 inches)	83%	high
November Weather	7°C (45°F)	80 mm (3.1 inches)	80%	high
December Weather	2°C (35°F)	77 mm (3.0 inches)	78%	moderate