January Weather in Izumi, Japan

Last updated: August 23, 2025

In Izumi, Japan, the average temperature in January hovers around 9°C (49°F). You can expect temperatures to drop as low as 0°C (33°F) or rise to a pleasant 19°C (67°F). With an average humidity of 72%, it's a moderately moist month, accompanied by 64 mm (2.5 in) of precipitation over approximately 8 days. Prepare for a mix of cool and mild weather!

January Temperature in Izumi

In January in Izumi, the average temperature is 9°C (49°F). Maximums can reach 19°C (67°F), while minimums can dip as low as 0°C (33°F). It’s a great time to visit Izumi for those who enjoy mild weather and the chance to experience seasonal changes.

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

The chart illustrates January temperature patterns in Izumi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Izumi, January typically has an average temperature of 9°C (49°F), with highs reaching up to 19°C (67°F) and lows dropping to around 0°C (33°F).

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

January Precipitation in Izumi

In Izumi in January, the precipitation amount is 64 mm (2.5 in) over the course of 8 days.

January Precipitation Trends in Izumi

The chart displays monthly precipitation patterns in Izumi, 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 Izumi, January typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 8 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 Izumi

In Izumi in January, humidity is 72%. With an average temperature of 9°C (49°F), this humidity feels like a chilly blanket wrapped around you, making travel feel damp and somewhat uncomfortable as you navigate the streets, heightening your awareness of every breeze.

January Average Humidity in Izumi

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

In Izumi 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 Izumi.

Maximum UV Index Levels in Izumi for January

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

Data source: Izumi 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 Izumi Compares to Other Months

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

This table compares monthly weather conditions in Izumi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	64 mm (2.5 inches)	72%	moderate
February Weather	10°C (50°F)	108 mm (4.3 inches)	68%	high
March Weather	13°C (55°F)	162 mm (6.4 inches)	72%	very high
April Weather	16°C (61°F)	160 mm (6.3 inches)	79%	extreme
May Weather	20°C (68°F)	250 mm (9.9 inches)	83%	extreme
June Weather	23°C (74°F)	343 mm (13.5 inches)	86%	extreme
July Weather	27°C (81°F)	454 mm (17.9 inches)	90%	extreme
August Weather	28°C (83°F)	247 mm (9.7 inches)	85%	extreme
September Weather	26°C (79°F)	261 mm (10.3 inches)	80%	extreme
October Weather	22°C (71°F)	141 mm (5.6 inches)	78%	very high
November Weather	16°C (61°F)	114 mm (4.5 inches)	76%	high
December Weather	11°C (52°F)	101 mm (4.0 inches)	74%	moderate