May Weather in Katano, Japan

Last updated: August 23, 2025

In May, the average temperature in Katano, Japan is a comfortable 20°C (68°F). Expect a minimum chill of 7°C (45°F) and occasional highs reaching 32°C (89°F). This month brings about 144 mm (5.7 in) of rain spread over 10 days, with humidity levels averaging a muggy 83%. Whether you’re exploring or relaxing, be prepared for a mix of warmth and showers!

May Temperature in Katano

In May in Katano, the average temperature is 20°C (68°F). Maximums can reach 32°C (89°F), while minimums can drop as low as 7°C (45°F). It's a great time to visit for pleasant weather and outdoor activities.

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

The chart illustrates May temperature patterns in Katano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katano, May typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (89°F) and lows dropping to around 7°C (45°F).

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

May Precipitation in Katano

In Katano in May, the precipitation amount is 144 mm (5.7 in) over a duration of 10 days.

May Precipitation Trends in Katano

The chart displays monthly precipitation patterns in Katano, 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 Katano, May typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Katano

In Katano in May humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.

May Average Humidity in Katano

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

In Katano 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 Katano.

Maximum UV Index Levels in Katano for May

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

Data source: Katano 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 Katano Compares to Other Months

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

This table compares monthly weather conditions in Katano, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	48 mm (1.9 inches)	82%	moderate
February Weather	6°C (43°F)	60 mm (2.4 inches)	79%	high
March Weather	10°C (51°F)	110 mm (4.3 inches)	74%	very high
April Weather	15°C (59°F)	129 mm (5.1 inches)	76%	extreme
May Weather	20°C (68°F)	144 mm (5.7 inches)	83%	extreme
June Weather	24°C (75°F)	140 mm (5.5 inches)	87%	extreme
July Weather	28°C (82°F)	245 mm (9.7 inches)	93%	extreme
August Weather	29°C (85°F)	150 mm (5.9 inches)	91%	extreme
September Weather	25°C (78°F)	142 mm (5.6 inches)	87%	very high
October Weather	19°C (67°F)	226 mm (8.9 inches)	85%	high
November Weather	13°C (56°F)	40 mm (1.6 inches)	83%	moderate
December Weather	8°C (46°F)	55 mm (2.2 inches)	83%	moderate