June Weather in Koya, Japan

Last updated: August 23, 2025

In June, the average temperature in Koya, Japan reaches a pleasant 22°C (72°F), with a minimum of 11°C (52°F) and a maximum soaring to 31°C (87°F). Expect approximately 220 mm (8.7 in) of precipitation spread over 14 days, contributing to a high average humidity of 87%. Prepare for a mix of warmth and moisture on your visit!

June Temperature in Koya

In June in Koya, the average temperature is 22°C (72°F). Maximums can reach 31°C (87°F) and minimums can be as low as 11°C (52°F). This pleasant climate makes it an ideal destination for travelers seeking a comfortable escape.

June Weather in Koya: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Koya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koya, June typically has an average temperature of 22°C (72°F), with highs reaching up to 31°C (87°F) and lows dropping to around 11°C (52°F).

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

June Precipitation in Koya

In Koya in June, the total precipitation amount is 220 mm (8.7 in) spread over a duration of 14 days.

June Precipitation Trends in Koya

The chart displays monthly precipitation patterns in Koya, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Koya, June typically receives around 220 mm (8.7 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

June Humidity in Koya

In Koya in June humidity is 87%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapping around you, making every step while traveling feel slightly heavier and more tedious, yet still refreshing in the shade.

June Average Humidity in Koya

This chart illustrates the average monthly humidity levels in Koya, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Koya is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Koya

In Koya in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Koya.

Maximum UV Index Levels in Koya for June

The chart shows the monthly maximum UV Index (UVI) for Koya in June, 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 June, the maximum UV index in Koya typically reaches 11, which falls under the extreme exposure category.

Data source: Koya June 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 June Weather in Koya Compares to Other Months

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

This table compares monthly weather conditions in Koya, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	67 mm (2.6 inches)	82%	moderate
February Weather	5°C (41°F)	83 mm (3.3 inches)	79%	high
March Weather	9°C (49°F)	127 mm (5.0 inches)	74%	very high
April Weather	14°C (57°F)	132 mm (5.2 inches)	76%	extreme
May Weather	19°C (66°F)	169 mm (6.7 inches)	83%	extreme
June Weather	22°C (72°F)	220 mm (8.7 inches)	87%	extreme
July Weather	26°C (79°F)	324 mm (12.7 inches)	93%	extreme
August Weather	28°C (82°F)	203 mm (8.0 inches)	91%	extreme
September Weather	24°C (75°F)	204 mm (8.0 inches)	87%	very high
October Weather	18°C (65°F)	265 mm (10.5 inches)	85%	high
November Weather	12°C (54°F)	62 mm (2.4 inches)	83%	high
December Weather	7°C (44°F)	79 mm (3.1 inches)	83%	moderate