May Weather in Onis, Spain

Last updated: August 27, 2025

In Onis, Spain during May, the average temperature hovers around 12°C (53°F), with a minimum dipping to 0°C (33°F) and a maximum soaring to 25°C (78°F). Expect about 133 mm (5.2 in) of precipitation spread over 17 days, leading to a high average humidity of 84%. Make sure to pack accordingly!

May Temperature in Onis

In May in Onis, the average temperature is 12°C (53°F). The maximum can reach 25°C (78°F), and the minimum can be as low as 0°C (33°F). This makes it an ideal time for travelers to enjoy a mild climate, perfect for outdoor activities and sightseeing.

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

The chart illustrates May temperature patterns in Onis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onis, May typically has an average temperature of 12°C (53°F), with highs reaching up to 25°C (78°F) and lows dropping to around 0°C (33°F).

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

May Precipitation in Onis

In Onis in May, the precipitation amount is 133 mm (5.2 in) over the span of 17 days.

May Precipitation Trends in Onis

The chart displays monthly precipitation patterns in Onis, 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 Onis, May typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 17 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 Onis

In Onis in May, humidity is 84%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that clings to your skin, making travel a bit uncomfortable as you navigate through the heavy, moist air.

May Average Humidity in Onis

This chart illustrates the average monthly humidity levels in Onis, 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 Onis is approximately 84%, 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 Onis

In Onis 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 Onis.

Maximum UV Index Levels in Onis for May

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

Data source: Onis 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 Onis Compares to Other Months

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

This table compares monthly weather conditions in Onis, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	114 mm (4.5 inches)	87%	low
February Weather	6°C (43°F)	114 mm (4.5 inches)	85%	moderate
March Weather	7°C (44°F)	126 mm (5.0 inches)	83%	high
April Weather	9°C (48°F)	128 mm (5.0 inches)	83%	very high
May Weather	12°C (53°F)	133 mm (5.2 inches)	84%	very high
June Weather	14°C (58°F)	160 mm (6.3 inches)	84%	extreme
July Weather	17°C (62°F)	117 mm (4.6 inches)	86%	very high
August Weather	17°C (62°F)	105 mm (4.1 inches)	78%	very high
September Weather	15°C (59°F)	109 mm (4.3 inches)	77%	very high
October Weather	12°C (53°F)	119 mm (4.7 inches)	82%	moderate
November Weather	7°C (45°F)	179 mm (7.0 inches)	86%	moderate
December Weather	6°C (43°F)	175 mm (6.9 inches)	87%	low