May Weather in Sils, Spain

Last updated: August 27, 2025

In May, the average temperature in Sils, Spain hovers around 17°C (63°F), creating a pleasant atmosphere. However, be prepared for temperature fluctuations, as it can dip to a chilly 4°C (40°F) or soar up to a warm 33°C (92°F). This month, 72 mm (2.8 in) of precipitation is expected over 11 days, with an average humidity level of 78%. Come ready for a mix of weather experiences!

May Temperature in Sils

In May in Sils, the average temperature is 17°C (63°F). Maximum temperatures can reach up to 33°C (92°F), while minimums can drop as low as 4°C (40°F). This variation in climate makes Sils an ideal destination for travelers looking to experience a range of weather conditions.

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

The chart illustrates May temperature patterns in Sils, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sils, May typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Sils

In Sils in May, the precipitation amount is 72 mm (2.8 in) over the course of 11 days.

May Precipitation Trends in Sils

The chart displays monthly precipitation patterns in Sils, 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 Sils, May typically receives around 72 mm (2.8 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 Sils

In Sils in May, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

May Average Humidity in Sils

This chart illustrates the average monthly humidity levels in Sils, 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 Sils is approximately 78%, 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 Sils

In Sils in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sils.

Maximum UV Index Levels in Sils for May

The chart shows the monthly maximum UV Index (UVI) for Sils 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 Sils typically reaches 8, which falls under the very high exposure category.

Data source: Sils 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 Sils Compares to Other Months

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

This table compares monthly weather conditions in Sils, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	74 mm (2.9 inches)	77%	moderate
February Weather	10°C (50°F)	52 mm (2.1 inches)	73%	moderate
March Weather	11°C (52°F)	58 mm (2.3 inches)	75%	moderate
April Weather	13°C (56°F)	79 mm (3.1 inches)	77%	high
May Weather	17°C (63°F)	72 mm (2.8 inches)	78%	very high
June Weather	22°C (72°F)	48 mm (1.9 inches)	77%	very high
July Weather	24°C (76°F)	56 mm (2.2 inches)	78%	very high
August Weather	24°C (76°F)	54 mm (2.1 inches)	75%	very high
September Weather	21°C (69°F)	96 mm (3.8 inches)	73%	high
October Weather	17°C (62°F)	129 mm (5.1 inches)	77%	high
November Weather	11°C (53°F)	79 mm (3.1 inches)	77%	moderate
December Weather	9°C (48°F)	37 mm (1.5 inches)	74%	low