May Weather in Koka, Japan

Last updated: August 23, 2025

In Koka, Japan, the average temperature in May is a pleasant 19°C (66°F). However, temperatures can vary significantly, with a minimum of 4°C (40°F) and a maximum of 32°C (89°F). Travelers should be prepared for some rainfall, as the area receives an average of 163 mm (6.4 in) of precipitation over 12 days. With an average humidity level of 83%, it's wise to stay hydrated and enjoy the lush surroundings!

May Temperature in Koka

In May in Koka, the average temperature is 19°C (66°F). Maximums can reach 32°C (89°F), while minimums can drop as low as 4°C (40°F). This weather makes Koka a great destination for travelers looking to enjoy a mix of warm and cooler temperatures.

May Weather in Koka: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Koka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koka, May typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (89°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Koka

In Koka in May, the precipitation amount reaches 163 mm (6.4 in) over the course of 12 days.

May Precipitation Trends in Koka

The chart displays monthly precipitation patterns in Koka, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Koka, May typically receives around 163 mm (6.4 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Koka

In Koka in May, humidity is 83%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making travel feel more sluggish and muggy, yet there's a refreshing coolness in the air that invites you to explore.

May Average Humidity in Koka

This chart illustrates the average monthly humidity levels in Koka, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Koka is approximately 83%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Koka

In Koka in May, 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 Koka.

Maximum UV Index Levels in Koka for May

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

Data source: Koka May 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 May Weather in Koka Compares to Other Months

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

This table compares monthly weather conditions in Koka, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	53 mm (2.1 inches)	82%	moderate
February Weather	5°C (40°F)	58 mm (2.3 inches)	79%	high
March Weather	9°C (48°F)	136 mm (5.3 inches)	74%	very high
April Weather	13°C (56°F)	146 mm (5.8 inches)	76%	very high
May Weather	19°C (66°F)	163 mm (6.4 inches)	83%	extreme
June Weather	22°C (72°F)	174 mm (6.8 inches)	87%	extreme
July Weather	26°C (79°F)	301 mm (11.8 inches)	93%	extreme
August Weather	28°C (82°F)	207 mm (8.2 inches)	91%	extreme
September Weather	24°C (75°F)	168 mm (6.6 inches)	87%	very high
October Weather	18°C (65°F)	271 mm (10.7 inches)	85%	high
November Weather	12°C (53°F)	47 mm (1.8 inches)	83%	moderate
December Weather	6°C (44°F)	64 mm (2.5 inches)	83%	moderate