May Weather in Kuromatsunai, Japan

Last updated: August 23, 2025

In May, the average temperature in Kuromatsunai, Japan is a mild 11°C (52°F). Visitors can expect a minimum temperature of 5°C (40°F) and a comfortable maximum of 21°C (70°F). However, be prepared for some rain: the area sees about 90 mm (3.5 in) of precipitation over 13 days. Additionally, the average humidity is 86%, adding a touch of warmth to the atmosphere.

May Temperature in Kuromatsunai

In May in Kuromatsunai, the average temperature is 11°C (52°F). Maximums can reach 21°C (70°F), while minimums can drop to as low as 5°C (40°F). It's advisable to pack layers to stay comfortable while exploring the varied weather conditions.

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

The chart illustrates May temperature patterns in Kuromatsunai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kuromatsunai, May typically has an average temperature of 11°C (52°F), with highs reaching up to 21°C (70°F) and lows dropping to around 5°C (40°F).

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

May Precipitation in Kuromatsunai

In Kuromatsunai in May, the precipitation amount is 90 mm (3.5 in) over the course of 13 days.

May Precipitation Trends in Kuromatsunai

The chart displays monthly precipitation patterns in Kuromatsunai, 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 Kuromatsunai, May typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 13 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 Kuromatsunai

In Kuromatsunai in May humidity is 86%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting travelers to seek sheltered spots or indoor attractions to escape the uncomfortable dampness.

May Average Humidity in Kuromatsunai

This chart illustrates the average monthly humidity levels in Kuromatsunai, 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 Kuromatsunai is approximately 86%, 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 Kuromatsunai

In Kuromatsunai in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Kuromatsunai.

Maximum UV Index Levels in Kuromatsunai for May

The chart shows the monthly maximum UV Index (UVI) for Kuromatsunai 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 Kuromatsunai typically reaches 9, which falls under the very high exposure category.

Data source: Kuromatsunai 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 Kuromatsunai Compares to Other Months

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

This table compares monthly weather conditions in Kuromatsunai, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	117 mm (4.6 inches)	84%	low
February Weather	-3°C (28°F)	114 mm (4.5 inches)	83%	moderate
March Weather	1°C (35°F)	104 mm (4.1 inches)	81%	high
April Weather	5°C (42°F)	93 mm (3.7 inches)	81%	high
May Weather	11°C (52°F)	90 mm (3.5 inches)	86%	very high
June Weather	15°C (59°F)	119 mm (4.7 inches)	87%	very high
July Weather	20°C (67°F)	116 mm (4.6 inches)	93%	very high
August Weather	21°C (70°F)	158 mm (6.2 inches)	95%	very high
September Weather	19°C (66°F)	151 mm (5.9 inches)	88%	very high
October Weather	13°C (56°F)	165 mm (6.5 inches)	83%	moderate
November Weather	6°C (44°F)	199 mm (7.8 inches)	79%	moderate
December Weather	0°C (31°F)	197 mm (7.7 inches)	80%	low