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May Weather in Santo Isidoro, Portugal

Last updated: August 27, 2025

The average temperature in Santo Isidoro, Portugal during May is a comfortable 16°C (61°F). Expect minimums around 11°C (52°F) and maximums reaching 24°C (76°F). Be prepared for a bit of rain, with precipitation amounting to 39 mm (1.5 in) spread over 4 days. The air will feel relatively humid, with an average humidity of 70%.

May Temperature in Santo Isidoro

In May in Santo Isidoro, the average temperature is 16°C (61°F). Maximums can reach 24°C (76°F), while minimums can be as low as 11°C (52°F). This mild climate makes it an ideal destination for travelers seeking comfortable weather and outdoor activities.

May Weather in Santo Isidoro: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Santo Isidoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Isidoro, May typically has an average temperature of 16°C (61°F), with highs reaching up to 24°C (76°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec555656576062646464635957
Data source: Temperature data for Santo Isidoro 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 Santo Isidoro

In Santo Isidoro in May, the precipitation amount is 39 mm (1.5 in) spread over a period of 4 days.

May Precipitation Trends in Santo Isidoro

The chart displays monthly precipitation patterns in Santo Isidoro, 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 Santo Isidoro, May typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4863697739166632639982
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santo Isidoro

In Santo Isidoro in May humidity is 70%. With an average temperature of 16°C (61°F), this humidity feels like a warm, damp blanket wrapping around you, making travel somewhat uncomfortable as you navigate the sticky air while trying to enjoy your surroundings.

May Average Humidity in Santo Isidoro

This chart illustrates the average monthly humidity levels in Santo Isidoro, 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 Santo Isidoro 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 Santo Isidoro

In Santo Isidoro 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 Santo Isidoro.

Maximum UV Index Levels in Santo Isidoro for May

The chart shows the monthly maximum UV Index (UVI) for Santo Isidoro 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 Santo Isidoro typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Santo Isidoro 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 Santo Isidoro Compares to Other Months

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

This table compares monthly weather conditions in Santo Isidoro, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)48 mm (1.9 inches)85%moderate
February Weather13°C (56°F)63 mm (2.5 inches)75%moderate
March Weather13°C (56°F)69 mm (2.7 inches)72%high
April Weather14°C (58°F)77 mm (3.0 inches)70%very high
May Weather16°C (61°F)39 mm (1.5 inches)70%very high
June Weather17°C (62°F)16 mm (0.6 inches)63%extreme
July Weather18°C (64°F)6 mm (0.2 inches)60%very high
August Weather18°C (64°F)6 mm (0.2 inches)60%very high
September Weather18°C (65°F)32 mm (1.3 inches)67%very high
October Weather17°C (63°F)63 mm (2.5 inches)74%high
November Weather15°C (60°F)99 mm (3.9 inches)83%moderate
December Weather14°C (58°F)82 mm (3.2 inches)85%moderate

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