May Weather in Saku, Japan

Last updated: August 23, 2025

In May, the average temperature in Saku, Japan hovers around 15°C (59°F), with potential fluctuations between a chilly 1°C (33°F) and a warm 30°C (87°F). Expect 142 mm (5.6 in) of precipitation over 17 days, contributing to an average humidity of 81%. Embrace the unique climate of this vibrant locale!

May Temperature in Saku

In May in Saku, the average temperature is 15°C (59°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop as low as 1°C (33°F). Travelers should be prepared for a wide range of temperatures, making layered clothing a smart choice for their visit.

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

The chart illustrates May temperature patterns in Saku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saku, May typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (33°F).

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

May Precipitation in Saku

In Saku in May, the total precipitation amount is 142 mm (5.6 in) over the course of 17 days.

May Precipitation Trends in Saku

The chart displays monthly precipitation patterns in Saku, 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 Saku, May typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 17 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 Saku

In Saku in May humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

May Average Humidity in Saku

This chart illustrates the average monthly humidity levels in Saku, 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 Saku is approximately 81%, 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 Saku

In Saku 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 Saku.

Maximum UV Index Levels in Saku for May

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

Data source: Saku 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 Saku Compares to Other Months

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

This table compares monthly weather conditions in Saku, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (31°F)	48 mm (1.9 inches)	88%	moderate
February Weather	1°C (33°F)	49 mm (1.9 inches)	86%	high
March Weather	5°C (41°F)	106 mm (4.2 inches)	81%	very high
April Weather	9°C (49°F)	105 mm (4.1 inches)	78%	very high
May Weather	15°C (59°F)	142 mm (5.6 inches)	81%	extreme
June Weather	18°C (65°F)	193 mm (7.6 inches)	88%	extreme
July Weather	22°C (72°F)	287 mm (11.3 inches)	92%	extreme
August Weather	23°C (75°F)	190 mm (7.5 inches)	92%	extreme
September Weather	19°C (66°F)	185 mm (7.3 inches)	89%	very high
October Weather	13°C (56°F)	253 mm (9.9 inches)	87%	high
November Weather	7°C (45°F)	38 mm (1.5 inches)	85%	moderate
December Weather	2°C (36°F)	50 mm (2.0 inches)	86%	moderate