May Weather in Oma, Japan

Last updated: August 23, 2025

In May, the average temperature in Oma, Japan hovers around 11°C (52°F), with daily variations ranging from a cool 6°C (43°F) to a pleasant 17°C (64°F). Expect 95 mm (3.8 in) of precipitation spread across 11 days, contributing to an elevated average humidity of 86%. Prepare for a month that blends cool temperatures with a touch of wetness! 🌦️

May Temperature in Oma

In May in Oma, the average temperature is 11°C (52°F), with maximums reaching 17°C (64°F) and minimums dipping as low as 6°C (43°F). It’s a pleasantly mild time to explore, making it ideal for outdoor activities and sightseeing.

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

The chart illustrates May temperature patterns in Oma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oma, May typically has an average temperature of 11°C (52°F), with highs reaching up to 17°C (64°F) and lows dropping to around 6°C (43°F).

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

May Precipitation in Oma

In Oma in May, the precipitation amount is 95 mm (3.8 in) spread over 11 days.

May Precipitation Trends in Oma

The chart displays monthly precipitation patterns in Oma, 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 Oma, May typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 11 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 Oma

In Oma 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 Oma

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

In Oma 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 Oma.

Maximum UV Index Levels in Oma for May

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

Data source: Oma 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 Oma Compares to Other Months

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

This table compares monthly weather conditions in Oma, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	117 mm (4.6 inches)	79%	low
February Weather	1°C (34°F)	115 mm (4.5 inches)	78%	moderate
March Weather	4°C (40°F)	94 mm (3.7 inches)	77%	moderate
April Weather	7°C (46°F)	97 mm (3.8 inches)	78%	very high
May Weather	11°C (52°F)	95 mm (3.8 inches)	86%	very high
June Weather	14°C (58°F)	107 mm (4.2 inches)	91%	very high
July Weather	19°C (66°F)	100 mm (3.9 inches)	95%	very high
August Weather	21°C (71°F)	171 mm (6.7 inches)	97%	extreme
September Weather	20°C (69°F)	116 mm (4.6 inches)	89%	very high
October Weather	16°C (61°F)	159 mm (6.3 inches)	81%	high
November Weather	9°C (49°F)	133 mm (5.2 inches)	78%	moderate
December Weather	3°C (38°F)	167 mm (6.6 inches)	77%	low