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May Weather in Caldelas, Portugal

Last updated: August 27, 2025

In May, the average temperature in Caldelas, Portugal hovers around 16°C (61°F). Expect a minimum of 2°C (37°F) and a maximum of 31°C (88°F). During this month, the region typically receives 119 mm (4.7 in) of rainfall spread over 10 days, contributing to an average humidity of 78%.

May Temperature in Caldelas

In May in Caldelas, the average temperature is 16°C (61°F), with maximums potentially reaching 31°C (88°F) and minimums dropping to as low as 2°C (37°F). This weather makes it an ideal time for travelers to enjoy a variety of outdoor activities while packing for both warm days and cooler nights.

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

The chart illustrates May temperature patterns in Caldelas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caldelas, May typically has an average temperature of 16°C (61°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec464951556063686866595249
Data source: Temperature data for Caldelas 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 Caldelas

In Caldelas in May, the total precipitation amount is 119 mm (4.7 in) over the span of 10 days.

May Precipitation Trends in Caldelas

The chart displays monthly precipitation patterns in Caldelas, 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 Caldelas, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec14720920517911970343459166228273
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Caldelas

In Caldelas 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 Caldelas

This chart illustrates the average monthly humidity levels in Caldelas, 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 Caldelas is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Caldelas

In Caldelas 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 Caldelas.

Maximum UV Index Levels in Caldelas for May

The chart shows the monthly maximum UV Index (UVI) for Caldelas 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 Caldelas typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689111098642
Data source: Caldelas 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 Caldelas Compares to Other Months

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

This table compares monthly weather conditions in Caldelas, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)147 mm (5.8 inches)87%low
February Weather10°C (50°F)209 mm (8.2 inches)81%moderate
March Weather11°C (51°F)205 mm (8.1 inches)78%high
April Weather13°C (55°F)179 mm (7.0 inches)79%very high
May Weather16°C (61°F)119 mm (4.7 inches)78%very high
June Weather17°C (64°F)70 mm (2.8 inches)71%extreme
July Weather20°C (68°F)34 mm (1.3 inches)63%very high
August Weather20°C (68°F)34 mm (1.4 inches)64%very high
September Weather19°C (66°F)59 mm (2.3 inches)71%very high
October Weather15°C (59°F)166 mm (6.5 inches)79%high
November Weather11°C (52°F)228 mm (9.0 inches)86%moderate
December Weather9°C (49°F)273 mm (10.8 inches)87%low

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