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May Weather in Sao Mateus, Portugal

Last updated: August 27, 2025

In Sao Mateus, Portugal, the average temperature in May hovers around 16°C (62°F), with a comfortable range from a minimum of 12°C (53°F) to a maximum of 19°C (67°F). Expect 54 mm (2.1 in) of precipitation spread over about 8 days, contributing to an average humidity of 83%. Perfect weather for enjoying the vibrant atmosphere!

May Temperature in Sao Mateus

In May in Sao Mateus, the average temperature is 16°C (62°F). Maximum temperatures can reach 19°C (67°F), while minimums can drop to as low as 12°C (53°F). This mild climate makes Sao Mateus an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.

May Weather in Sao Mateus: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Sao Mateus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Mateus, May typically has an average temperature of 16°C (62°F), with highs reaching up to 19°C (67°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec615959596265697271686462
Data source: Temperature data for Sao Mateus 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 Sao Mateus

In Sao Mateus in May, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

May Precipitation Trends in Sao Mateus

The chart displays monthly precipitation patterns in Sao Mateus, 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 Sao Mateus, May typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec78774976544322474683107121
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Sao Mateus

In Sao Mateus in May humidity is 83%. With an average temperature of 16°C (62°F), this humidity feels like a warm, sticky embrace that can make traveling feel a bit heavy, leaving you longing for refreshing breezes and shaded spots to relax in.

May Average Humidity in Sao Mateus

This chart illustrates the average monthly humidity levels in Sao Mateus, 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 Sao Mateus is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%84%84%83%84%86%82%82%79%80%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Sao Mateus

In Sao Mateus 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 Sao Mateus.

Maximum UV Index Levels in Sao Mateus for May

The chart shows the monthly maximum UV Index (UVI) for Sao Mateus 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 Sao Mateus typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Sao Mateus 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 Sao Mateus Compares to Other Months

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

This table compares monthly weather conditions in Sao Mateus, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)78 mm (3.1 inches)84%moderate
February Weather15°C (59°F)77 mm (3.0 inches)83%moderate
March Weather15°C (59°F)49 mm (1.9 inches)84%high
April Weather15°C (60°F)76 mm (3.0 inches)84%very high
May Weather16°C (62°F)54 mm (2.1 inches)83%very high
June Weather19°C (66°F)43 mm (1.7 inches)84%extreme
July Weather21°C (70°F)22 mm (0.8 inches)86%very high
August Weather22°C (72°F)47 mm (1.9 inches)82%very high
September Weather22°C (71°F)45 mm (1.8 inches)82%very high
October Weather20°C (69°F)83 mm (3.3 inches)79%high
November Weather18°C (65°F)107 mm (4.2 inches)80%moderate
December Weather17°C (63°F)121 mm (4.8 inches)85%moderate

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