May Weather in Sumoto, Japan

Last updated: August 23, 2025

In May, the average temperature in Sumoto, Japan hovers around a comfortable 18°C (64°F). Expect temperatures to range from a cool 12°C (53°F) minimum to a pleasant 23°C (73°F) maximum. Be prepared for some wet days, with an average precipitation of 171 mm (6.7 in) spread over 10 days. Additionally, the average humidity sits at a high 84%, giving the air a tropical feel.

May Temperature in Sumoto

In May in Sumoto, the average temperature is 18°C (64°F). Maximum temperatures can reach 23°C (73°F), while minimums can drop to as low as 12°C (53°F). This mild climate makes Sumoto an ideal destination for travelers looking to enjoy pleasant weather.

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

The chart illustrates May temperature patterns in Sumoto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumoto, May typically has an average temperature of 18°C (64°F), with highs reaching up to 23°C (73°F) and lows dropping to around 12°C (53°F).

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

May Precipitation in Sumoto

In Sumoto in May, the precipitation amount is 171 mm (6.7 in) over the course of 10 days.

May Precipitation Trends in Sumoto

The chart displays monthly precipitation patterns in Sumoto, 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 Sumoto, May typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 10 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 Sumoto

In Sumoto in May humidity is 84%. With an average temperature of 18°C (64°F), this humidity feels like there's a heavy blanket wrapping around you, making travel feel a bit sticky and muggy, potentially leading to fatigue if you're not prepared.

May Average Humidity in Sumoto

This chart illustrates the average monthly humidity levels in Sumoto, 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 Sumoto is approximately 84%, 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 Sumoto

In Sumoto 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 Sumoto.

Maximum UV Index Levels in Sumoto for May

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

Data source: Sumoto 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 Sumoto Compares to Other Months

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

This table compares monthly weather conditions in Sumoto, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	65 mm (2.6 inches)	82%	moderate
February Weather	8°C (46°F)	74 mm (2.9 inches)	79%	moderate
March Weather	10°C (51°F)	117 mm (4.6 inches)	73%	very high
April Weather	14°C (57°F)	132 mm (5.2 inches)	74%	extreme
May Weather	18°C (64°F)	171 mm (6.7 inches)	84%	extreme
June Weather	21°C (70°F)	192 mm (7.5 inches)	86%	extreme
July Weather	25°C (78°F)	291 mm (11.5 inches)	92%	extreme
August Weather	27°C (81°F)	154 mm (6.1 inches)	92%	extreme
September Weather	25°C (77°F)	206 mm (8.1 inches)	87%	very high
October Weather	20°C (69°F)	292 mm (11.5 inches)	85%	high
November Weather	16°C (60°F)	68 mm (2.7 inches)	84%	moderate
December Weather	11°C (51°F)	83 mm (3.3 inches)	82%	moderate