May Weather in Alcains, Portugal

Last updated: August 27, 2025

In May, the average temperature in Alcains, Portugal is a pleasant 17°C (64°F). Temperatures can vary significantly, with a minimum of 3°C (38°F) and soaring up to a maximum of 32°C (89°F). Expect precipitation of around 44 mm (1.7 in) spread over 6 days, accompanied by an average humidity of 70%. Get ready for a month of delightful weather!

May Temperature in Alcains

In May in Alcains, the average temperature is 17°C (64°F), with a maximum that can reach 32°C (89°F) and a minimum that can drop as low as 3°C (38°F). Be prepared for a range of weather conditions to make the most of your visit.

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

The chart illustrates May temperature patterns in Alcains, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alcains, May typically has an average temperature of 17°C (64°F), with highs reaching up to 32°C (89°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Alcains

In Alcains in May, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.

May Precipitation Trends in Alcains

The chart displays monthly precipitation patterns in Alcains, 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 Alcains, May typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 6 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 Alcains

In Alcains in May, humidity is 70%. With an average temperature of 17°C (64°F), this humidity feels like a warm blanket wrapping around you, making traveling a bit sticky but still enjoyable as you explore the sights while staying hydrated.

May Average Humidity in Alcains

This chart illustrates the average monthly humidity levels in Alcains, 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 Alcains is approximately 70%, 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 Alcains

In Alcains 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 Alcains.

Maximum UV Index Levels in Alcains for May

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

Data source: Alcains 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 Alcains Compares to Other Months

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

This table compares monthly weather conditions in Alcains, 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)	48 mm (1.9 inches)	85%	moderate
February Weather	10°C (50°F)	69 mm (2.7 inches)	75%	moderate
March Weather	11°C (52°F)	109 mm (4.3 inches)	72%	high
April Weather	13°C (56°F)	97 mm (3.8 inches)	70%	very high
May Weather	17°C (64°F)	44 mm (1.7 inches)	70%	very high
June Weather	20°C (69°F)	18 mm (0.7 inches)	63%	extreme
July Weather	24°C (75°F)	5 mm (0.2 inches)	60%	very high
August Weather	24°C (75°F)	6 mm (0.2 inches)	60%	very high
September Weather	21°C (70°F)	36 mm (1.4 inches)	67%	very high
October Weather	17°C (62°F)	73 mm (2.9 inches)	74%	high
November Weather	11°C (52°F)	104 mm (4.1 inches)	83%	moderate
December Weather	9°C (48°F)	99 mm (3.9 inches)	85%	moderate