January Weather in Koseda, Japan

Last updated: August 23, 2025

In January, the average temperature in Koseda, Japan hovers around 13°C (56°F), offering a pleasant experience for visitors. Temps can dip to a cool 5°C (42°F), while peaks reach a comfortable 21°C (70°F). Be prepared for some rain, as the area sees an average precipitation of 102 mm (4.0 in) over approximately 11 days. The air tends to be quite humid, with an average humidity level of 72%.

January Temperature in Koseda

In January in Koseda, the average temperature is 13°C (56°F). Maximum temperatures can reach 21°C (70°F), while minimums can drop to as low as 5°C (42°F). This mild climate makes Koseda an attractive destination for travelers looking to enjoy comfortable weather.

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

The chart illustrates January temperature patterns in Koseda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koseda, January typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (70°F) and lows dropping to around 5°C (42°F).

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

January Precipitation in Koseda

In Koseda in January, the precipitation amount is 102 mm (4.0 in) over the course of 11 days.

January Precipitation Trends in Koseda

The chart displays monthly precipitation patterns in Koseda, 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 Koseda, January typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 11 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 Koseda

In Koseda in January, humidity is 72%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making outdoor activities somewhat uncomfortable and reminding travelers to stay hydrated and seek shade whenever possible.

January Average Humidity in Koseda

This chart illustrates the average monthly humidity levels in Koseda, 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 Koseda is approximately 72%, 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 Koseda

In Koseda in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Koseda.

Maximum UV Index Levels in Koseda for January

The chart shows the monthly maximum UV Index (UVI) for Koseda 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 Koseda typically reaches 5, which falls under the moderate exposure category.

Data source: Koseda 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 Koseda Compares to Other Months

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

This table compares monthly weather conditions in Koseda, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	102 mm (4.0 inches)	72%	moderate
February Weather	13°C (56°F)	151 mm (6.0 inches)	68%	high
March Weather	16°C (61°F)	201 mm (7.9 inches)	72%	very high
April Weather	18°C (66°F)	172 mm (6.8 inches)	79%	extreme
May Weather	21°C (71°F)	251 mm (9.9 inches)	83%	extreme
June Weather	24°C (75°F)	469 mm (18.5 inches)	86%	extreme
July Weather	27°C (81°F)	250 mm (9.8 inches)	90%	extreme
August Weather	28°C (82°F)	200 mm (7.9 inches)	85%	extreme
September Weather	27°C (80°F)	281 mm (11.1 inches)	80%	extreme
October Weather	23°C (75°F)	173 mm (6.8 inches)	78%	very high
November Weather	19°C (67°F)	153 mm (6.0 inches)	76%	high
December Weather	15°C (60°F)	132 mm (5.2 inches)	74%	moderate