January Weather in Kamaishi, Japan

Last updated: August 23, 2025

In January, the average temperature in Kamaishi, Japan hovers around 0°C (33°F), with a minimum dropping to -14°C (7°F) and a maximum reaching 10°C (49°F). Expect about 45 mm (1.8 in) of precipitation spread over 9 days, contributing to an average humidity of 80%.

January Temperature in Kamaishi

In January in Kamaishi, the average temperature is 0°C (33°F). Maximums can reach 10°C (49°F), while minimums can drop as low as -14°C (7°F). Travelers should be prepared for chilly conditions and pack warm clothing to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Kamaishi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kamaishi, January typically has an average temperature of 0°C (33°F), with highs reaching up to 10°C (49°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Kamaishi

In Kamaishi in January, the precipitation amount is 45 mm (1.8 in) spread over 9 days.

January Precipitation Trends in Kamaishi

The chart displays monthly precipitation patterns in Kamaishi, 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 Kamaishi, January typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 9 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 Kamaishi

In Kamaishi in January humidity is 80%. With an average temperature of 0°C (33°F), this humidity feels like an uncomfortable chill that clings to your skin, making travel feel damp and frigid, as if each breath is infused with brisk moisture that can seep through your layers.

January Average Humidity in Kamaishi

This chart illustrates the average monthly humidity levels in Kamaishi, 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 Kamaishi is approximately 80%, 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 Kamaishi

In Kamaishi 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 Kamaishi, you can check the information here.

Maximum UV Index Levels in Kamaishi for January

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

Data source: Kamaishi 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 Kamaishi Compares to Other Months

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

This table compares monthly weather conditions in Kamaishi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	45 mm (1.8 inches)	80%	moderate
February Weather	1°C (33°F)	56 mm (2.2 inches)	79%	moderate
March Weather	4°C (40°F)	121 mm (4.8 inches)	77%	high
April Weather	8°C (47°F)	123 mm (4.9 inches)	75%	very high
May Weather	14°C (57°F)	118 mm (4.7 inches)	80%	very high
June Weather	17°C (63°F)	135 mm (5.3 inches)	87%	extreme
July Weather	21°C (70°F)	187 mm (7.3 inches)	92%	very high
August Weather	23°C (73°F)	208 mm (8.2 inches)	92%	very high
September Weather	20°C (67°F)	171 mm (6.7 inches)	86%	very high
October Weather	14°C (58°F)	223 mm (8.8 inches)	82%	high
November Weather	8°C (47°F)	56 mm (2.2 inches)	79%	moderate
December Weather	2°C (36°F)	67 mm (2.6 inches)	80%	moderate