May Weather in Tomioka, Japan

Last updated: August 23, 2025

In Tomioka, Japan, the average temperature in May hovers around 18°C (65°F), making it a moderately pleasant time of year. However, be prepared for a wide range as temperatures can dip to a brisk 5°C (41°F) or soar up to a warm 32°C (90°F). With an average precipitation of 174 mm (6.8 in) spread across 15 days, and humidity levels at a notable 81%, it's wise to pack accordingly.

May Temperature in Tomioka

In May in Tomioka, the average temperature is 18°C (65°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 5°C (41°F). Be prepared for a range of temperatures, making it a great time for travelers to enjoy both warm days and cooler nights.

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

The chart illustrates May temperature patterns in Tomioka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomioka, May typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Tomioka

In Tomioka in May, the precipitation amount is 174 mm (6.8 in) spread over a period of 15 days.

May Precipitation Trends in Tomioka

The chart displays monthly precipitation patterns in Tomioka, 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 Tomioka, May typically receives around 174 mm (6.8 inches) of precipitation spread over approximately 15 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 Tomioka

In Tomioka in May, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

May Average Humidity in Tomioka

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

In Tomioka 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 Tomioka.

Maximum UV Index Levels in Tomioka for May

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

Data source: Tomioka 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 Tomioka Compares to Other Months

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

This table compares monthly weather conditions in Tomioka, 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)	57 mm (2.3 inches)	88%	moderate
February Weather	5°C (41°F)	55 mm (2.2 inches)	86%	high
March Weather	9°C (48°F)	134 mm (5.3 inches)	81%	very high
April Weather	13°C (55°F)	148 mm (5.8 inches)	78%	very high
May Weather	18°C (65°F)	174 mm (6.8 inches)	81%	extreme
June Weather	21°C (69°F)	212 mm (8.3 inches)	88%	extreme
July Weather	24°C (76°F)	338 mm (13.3 inches)	92%	extreme
August Weather	26°C (79°F)	214 mm (8.4 inches)	92%	extreme
September Weather	22°C (71°F)	256 mm (10.1 inches)	89%	very high
October Weather	16°C (62°F)	319 mm (12.6 inches)	87%	high
November Weather	11°C (52°F)	50 mm (2.0 inches)	85%	moderate
December Weather	6°C (43°F)	54 mm (2.1 inches)	86%	moderate