May Weather in Vales do Rio, Portugal

Last updated: August 27, 2025

In Vales do Rio, Portugal, the average temperature in May hovers around 16°C (61°F), with a minimum of 2°C (35°F) and a maximum reaching up to 30°C (86°F). Visitors can expect 59 mm (2.3 in) of precipitation over approximately 9 days, alongside an average humidity level of 78%.

May Temperature in Vales do Rio

In May in Vales do Rio, the average temperature is 16°C (61°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 2°C (35°F). This range makes it a great time for travelers to enjoy a variety of outdoor activities while being prepared for both warm and cooler conditions.

May Weather in Vales do Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Vales do Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vales do Rio, May typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (86°F) and lows dropping to around 2°C (35°F).

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

May Precipitation in Vales do Rio

In Vales do Rio in May, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.

May Precipitation Trends in Vales do Rio

The chart displays monthly precipitation patterns in Vales do Rio, 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 Vales do Rio, May typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 9 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 Vales do Rio

In Vales do Rio in May, humidity is 78%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as it clings to your skin and creates a heavy atmosphere that can drain your energy.

May Average Humidity in Vales do Rio

This chart illustrates the average monthly humidity levels in Vales do Rio, 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 Vales do Rio 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 Vales do Rio

In Vales do Rio in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Vales do Rio.

Maximum UV Index Levels in Vales do Rio for May

The chart shows the monthly maximum UV Index (UVI) for Vales do Rio 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 Vales do Rio typically reaches 10, which falls under the very high exposure category.

Data source: Vales do Rio 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 Vales do Rio Compares to Other Months

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

This table compares monthly weather conditions in Vales do Rio, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	57 mm (2.2 inches)	87%	moderate
February Weather	8°C (47°F)	93 mm (3.6 inches)	81%	moderate
March Weather	10°C (49°F)	124 mm (4.9 inches)	78%	high
April Weather	12°C (54°F)	121 mm (4.8 inches)	79%	very high
May Weather	16°C (61°F)	59 mm (2.3 inches)	78%	very high
June Weather	19°C (66°F)	37 mm (1.4 inches)	71%	extreme
July Weather	22°C (72°F)	13 mm (0.5 inches)	63%	very high
August Weather	22°C (72°F)	16 mm (0.6 inches)	64%	very high
September Weather	19°C (67°F)	48 mm (1.9 inches)	71%	very high
October Weather	15°C (60°F)	91 mm (3.6 inches)	79%	high
November Weather	10°C (49°F)	133 mm (5.2 inches)	86%	moderate
December Weather	8°C (46°F)	120 mm (4.7 inches)	87%	moderate