May Weather in Tomamae, Japan

Last updated: August 23, 2025

In May, the average temperature in Tomamae, Japan is a mild 11°C (52°F), with a minimum dipping to 3°C (38°F) and a maximum soaring to 24°C (75°F). Expect about 79 mm (3.1 in) of precipitation spread over 12 days, contributing to an average humidity level of 88%. Plan accordingly to enjoy the weather!

May Temperature in Tomamae

In May in Tomamae, the average temperature is 11°C (52°F). The maximum can reach 24°C (75°F) and the minimum can be as low as 3°C (38°F). This temperature range makes it a pleasant time to explore outdoor activities and enjoy the local scenery.

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

The chart illustrates May temperature patterns in Tomamae, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomamae, May typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (75°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Tomamae

In Tomamae in May, the precipitation amount is 79 mm (3.1 in) over a period of 12 days.

May Precipitation Trends in Tomamae

The chart displays monthly precipitation patterns in Tomamae, 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 Tomamae, May typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 12 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 Tomamae

In Tomamae in May, humidity is 88%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

May Average Humidity in Tomamae

This chart illustrates the average monthly humidity levels in Tomamae, 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 Tomamae is approximately 88%, 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 Tomamae

In Tomamae in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Tomamae.

Maximum UV Index Levels in Tomamae for May

The chart shows the monthly maximum UV Index (UVI) for Tomamae 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 Tomamae typically reaches 8, which falls under the very high exposure category.

Data source: Tomamae 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 Tomamae Compares to Other Months

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

This table compares monthly weather conditions in Tomamae, 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 (24°F)	67 mm (2.6 inches)	87%	low
February Weather	-4°C (25°F)	80 mm (3.1 inches)	84%	moderate
March Weather	1°C (34°F)	78 mm (3.1 inches)	83%	moderate
April Weather	6°C (43°F)	65 mm (2.6 inches)	84%	high
May Weather	11°C (52°F)	79 mm (3.1 inches)	88%	very high
June Weather	15°C (59°F)	87 mm (3.4 inches)	88%	very high
July Weather	21°C (69°F)	96 mm (3.8 inches)	93%	very high
August Weather	21°C (70°F)	158 mm (6.2 inches)	94%	very high
September Weather	18°C (65°F)	84 mm (3.3 inches)	86%	high
October Weather	12°C (54°F)	150 mm (5.9 inches)	79%	moderate
November Weather	6°C (42°F)	154 mm (6.1 inches)	77%	moderate
December Weather	-1°C (30°F)	124 mm (4.9 inches)	83%	low