May Weather in Hiroo, Japan

Last updated: August 23, 2025

In Hiroo, Japan, the average temperature in May is a mild 11°C (52°F). Expect temperature fluctuations, with a minimum of 2°C (36°F) and a maximum of 29°C (84°F). Be prepared for some rain, as precipitation averages 95 mm (3.7 in) over 11 days, coupled with a high average humidity of 86%.

May Temperature in Hiroo

In May in Hiroo, the average temperature is 11°C (52°F). The maximum can reach 29°C (84°F) and the minimum can be as low as 2°C (36°F). It's a great time to visit, so be prepared for both warm afternoons and cool evenings.

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

The chart illustrates May temperature patterns in Hiroo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hiroo, May typically has an average temperature of 11°C (52°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Hiroo

In Hiroo in May, the total precipitation amount is 95 mm (3.7 in) spread over 11 days.

May Precipitation Trends in Hiroo

The chart displays monthly precipitation patterns in Hiroo, 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 Hiroo, May typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 11 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 Hiroo

In Hiroo 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 Hiroo

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

In Hiroo 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 Hiroo.

Maximum UV Index Levels in Hiroo for May

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

Data source: Hiroo 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 Hiroo Compares to Other Months

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

This table compares monthly weather conditions in Hiroo, 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)	61 mm (2.4 inches)	84%	low
February Weather	-4°C (25°F)	65 mm (2.6 inches)	83%	moderate
March Weather	1°C (34°F)	115 mm (4.5 inches)	83%	high
April Weather	5°C (42°F)	97 mm (3.8 inches)	83%	very high
May Weather	11°C (52°F)	95 mm (3.7 inches)	86%	very high
June Weather	14°C (58°F)	105 mm (4.1 inches)	88%	very high
July Weather	18°C (65°F)	106 mm (4.2 inches)	93%	very high
August Weather	19°C (67°F)	175 mm (6.9 inches)	96%	very high
September Weather	17°C (63°F)	140 mm (5.5 inches)	89%	very high
October Weather	12°C (54°F)	201 mm (7.9 inches)	83%	high
November Weather	6°C (43°F)	90 mm (3.6 inches)	80%	moderate
December Weather	-1°C (30°F)	66 mm (2.6 inches)	79%	low