January Weather in Omagari, Japan

Last updated: August 23, 2025

In Omagari, Japan, the average temperature in January hovers around -1°C (30°F). Expect chilly days with minimums plummeting to -16°C (4°F) and a maximum of 7°C (44°F). Prepare for damp conditions, as precipitation measures around 108 mm (4.2 in) over 19 days, coupled with an average humidity of 80%. Dress warmly and stay dry!

January Temperature in Omagari

In January in Omagari, the average temperature is -1°C (30°F). Maximums can reach 7°C (44°F), and minimums can drop as low as -16°C (4°F). Travelers should be prepared for chilly conditions and pack accordingly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Omagari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Omagari, January typically has an average temperature of -1°C (30°F), with highs reaching up to 7°C (44°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Omagari

In Omagari in January, the precipitation amount is 108 mm (4.2 in), occurring over a span of 19 days.

January Precipitation Trends in Omagari

The chart displays monthly precipitation patterns in Omagari, 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 Omagari, January typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 19 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 Omagari

In Omagari in January, humidity is 80%. With an average temperature of -1°C (30°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and travel quite challenging.

January Average Humidity in Omagari

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

In Omagari 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 Omagari, you can check the information here.

Maximum UV Index Levels in Omagari for January

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

Data source: Omagari 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 Omagari Compares to Other Months

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

This table compares monthly weather conditions in Omagari, 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)	108 mm (4.2 inches)	80%	moderate
February Weather	-1°C (31°F)	127 mm (5.0 inches)	79%	moderate
March Weather	4°C (40°F)	125 mm (4.9 inches)	77%	high
April Weather	9°C (48°F)	141 mm (5.6 inches)	75%	very high
May Weather	15°C (59°F)	135 mm (5.3 inches)	80%	very high
June Weather	19°C (66°F)	147 mm (5.8 inches)	87%	very high
July Weather	23°C (74°F)	191 mm (7.5 inches)	92%	very high
August Weather	24°C (76°F)	210 mm (8.2 inches)	92%	extreme
September Weather	20°C (68°F)	133 mm (5.2 inches)	86%	very high
October Weather	14°C (57°F)	159 mm (6.3 inches)	82%	high
November Weather	8°C (46°F)	127 mm (5.0 inches)	79%	moderate
December Weather	1°C (35°F)	157 mm (6.2 inches)	80%	moderate