May Weather in Osaki, Japan

Last updated: August 23, 2025

In May, the average temperature in Osaki, Japan is a pleasant 20°C (69°F). Expect temperatures to vary, with a minimum of 7°C (46°F) and a maximum reaching 30°C (86°F). The region experiences substantial precipitation, with 251 mm (9.9 in) of rain spread over 13 days. Humidity levels are relatively high at an average of 83%, giving the air a refreshing, albeit moist, feel.

May Temperature in Osaki

In May in Osaki, the average temperature is 20°C (69°F). Maximums can reach 30°C (86°F), and minimums can be as low as 7°C (46°F). This makes it an ideal time for travelers to enjoy a mix of warm days and cooler evenings.

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

The chart illustrates May temperature patterns in Osaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osaki, May typically has an average temperature of 20°C (69°F), with highs reaching up to 30°C (86°F) and lows dropping to around 7°C (46°F).

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

May Precipitation in Osaki

In Osaki in May, the total precipitation amount is 251 mm (9.9 in) spread over 13 days.

May Precipitation Trends in Osaki

The chart displays monthly precipitation patterns in Osaki, 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 Osaki, May typically receives around 251 mm (9.9 inches) of precipitation spread over approximately 13 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 Osaki

In Osaki in May, humidity is 83%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making every step slightly more laborious and the air thick with moisture, which can be quite stifling for traveling.

May Average Humidity in Osaki

This chart illustrates the average monthly humidity levels in Osaki, 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 Osaki is approximately 83%, 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 Osaki

In Osaki in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Osaki.

Maximum UV Index Levels in Osaki for May

The chart shows the monthly maximum UV Index (UVI) for Osaki 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 Osaki typically reaches 12, which falls under the extreme exposure category.

Data source: Osaki 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 Osaki Compares to Other Months

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

This table compares monthly weather conditions in Osaki, 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)	55 mm (2.2 inches)	72%	moderate
February Weather	9°C (48°F)	105 mm (4.2 inches)	68%	high
March Weather	13°C (55°F)	178 mm (7.0 inches)	72%	very high
April Weather	16°C (62°F)	142 mm (5.6 inches)	79%	very high
May Weather	20°C (69°F)	251 mm (9.9 inches)	83%	extreme
June Weather	23°C (74°F)	408 mm (16.0 inches)	86%	extreme
July Weather	27°C (80°F)	378 mm (14.9 inches)	90%	extreme
August Weather	28°C (82°F)	229 mm (9.0 inches)	85%	extreme
September Weather	25°C (78°F)	289 mm (11.4 inches)	80%	extreme
October Weather	21°C (70°F)	170 mm (6.7 inches)	78%	very high
November Weather	15°C (59°F)	95 mm (3.8 inches)	76%	high
December Weather	10°C (50°F)	79 mm (3.1 inches)	74%	moderate