January Weather in Iheya, Japan

Last updated: August 23, 2025

In January, the average temperature in Iheya, Japan is a pleasant 18°C (64°F), with a comfortable range from a minimum of 11°C (53°F) to a maximum of 23°C (74°F). Expect 103 mm (4.1 in) of precipitation over approximately 12 days, contributing to an average humidity of 71%. Embrace the refreshing atmosphere!

January Temperature in Iheya

In January in Iheya, the average temperature is 18°C (64°F), with maximums reaching up to 23°C (74°F) and minimums dipping as low as 11°C (53°F). This makes it an ideal time for travelers to enjoy a comfortable climate while exploring the beautiful surroundings.

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

The chart illustrates January temperature patterns in Iheya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iheya, January typically has an average temperature of 18°C (64°F), with highs reaching up to 23°C (74°F) and lows dropping to around 11°C (53°F).

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

January Precipitation in Iheya

In Iheya in January, the total precipitation amount is 103 mm (4.1 in), occurring over the course of 12 days.

January Precipitation Trends in Iheya

The chart displays monthly precipitation patterns in Iheya, 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 Iheya, January typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 12 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 Iheya

In Iheya in January, humidity is 71%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making traveling a bit sticky but still pleasant as the warmth envelops you, urging you to explore the vibrant surroundings while staying hydrated.

January Average Humidity in Iheya

This chart illustrates the average monthly humidity levels in Iheya, 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 Iheya is approximately 71%, 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 Iheya

In Iheya in January, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Iheya.

Maximum UV Index Levels in Iheya for January

The chart shows the monthly maximum UV Index (UVI) for Iheya 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 Iheya typically reaches 7, which falls under the high exposure category.

Data source: Iheya 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 Iheya Compares to Other Months

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

This table compares monthly weather conditions in Iheya, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	103 mm (4.1 inches)	71%	high
February Weather	18°C (64°F)	108 mm (4.3 inches)	71%	very high
March Weather	19°C (67°F)	132 mm (5.2 inches)	76%	extreme
April Weather	21°C (70°F)	135 mm (5.3 inches)	82%	extreme
May Weather	24°C (75°F)	214 mm (8.4 inches)	84%	extreme
June Weather	26°C (79°F)	392 mm (15.4 inches)	86%	extreme
July Weather	28°C (83°F)	173 mm (6.8 inches)	86%	extreme
August Weather	28°C (83°F)	161 mm (6.3 inches)	82%	extreme
September Weather	28°C (82°F)	204 mm (8.0 inches)	82%	extreme
October Weather	26°C (78°F)	135 mm (5.3 inches)	80%	very high
November Weather	23°C (73°F)	107 mm (4.2 inches)	79%	very high
December Weather	20°C (67°F)	141 mm (5.5 inches)	75%	high