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May Weather in Arraiolos, Portugal

Last updated: August 27, 2025

In May, the average temperature in Arraiolos, Portugal is a mild 19°C (66°F). Expect a minimum of 5°C (42°F) and a maximum reaching 35°C (95°F), providing a variety of weather experiences. With an average precipitation of 39 mm (1.5 in) spread over 6 days, you may want to pack an umbrella. Don't forget that the average humidity sits at a comfortable 70%, adding a touch of warmth to the atmosphere.

May Temperature in Arraiolos

In May in Arraiolos, the average temperature is 19°C (66°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as 5°C (42°F). This range makes it a versatile time for traveling, allowing for both warm days and cooler evenings.

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

The chart illustrates May temperature patterns in Arraiolos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arraiolos, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec485355586670747673655652
Data source: Temperature data for Arraiolos generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Arraiolos

In Arraiolos in May, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.

May Precipitation Trends in Arraiolos

The chart displays monthly precipitation patterns in Arraiolos, 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 Arraiolos, May typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec3451918839155525436863
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Arraiolos

In Arraiolos in May humidity is 70%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky and prompting frequent breaks for water as you explore the sights.

May Average Humidity in Arraiolos

This chart illustrates the average monthly humidity levels in Arraiolos, 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 Arraiolos is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Arraiolos

In Arraiolos 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 Arraiolos.

Maximum UV Index Levels in Arraiolos for May

The chart shows the monthly maximum UV Index (UVI) for Arraiolos 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 Arraiolos typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110109643
Data source: Arraiolos 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 Arraiolos Compares to Other Months

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

This table compares monthly weather conditions in Arraiolos, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)34 mm (1.3 inches)85%moderate
February Weather12°C (53°F)51 mm (2.0 inches)75%moderate
March Weather13°C (55°F)91 mm (3.6 inches)72%high
April Weather15°C (59°F)88 mm (3.5 inches)70%very high
May Weather19°C (66°F)39 mm (1.5 inches)70%very high
June Weather21°C (70°F)15 mm (0.6 inches)63%extreme
July Weather24°C (75°F)5 mm (0.2 inches)60%very high
August Weather24°C (76°F)5 mm (0.2 inches)60%very high
September Weather23°C (73°F)25 mm (1.0 inches)67%very high
October Weather19°C (66°F)43 mm (1.7 inches)74%high
November Weather13°C (56°F)68 mm (2.7 inches)83%moderate
December Weather11°C (52°F)63 mm (2.5 inches)85%moderate

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