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May Weather in Viseu, Brazil

Last updated: August 22, 2025

In Viseu, Brazil, the average temperature in May hovers around 26°C (80°F). However, you can expect a minimum of 22°C (72°F) and a maximum of 32°C (90°F). Be prepared for a wet month, as you'll likely encounter 366 mm (14.4 in) of precipitation spread over 29 days. With an average humidity of 87%, it's a time for embracing the tropics!

May Temperature in Viseu

In May in Viseu, the average temperature is 26°C (80°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 22°C (72°F). This pleasant climate makes Viseu an ideal destination for travelers seeking warm weather and enjoyable outdoor activities.

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

The chart illustrates May temperature patterns in Viseu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viseu, May typically has an average temperature of 26°C (80°F), with highs reaching up to 32°C (90°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec797978797980798081828281
Data source: Temperature data for Viseu 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 Viseu

In Viseu in May, the total precipitation amount is 366 mm (14.4 in) over a period of 29 days.

May Precipitation Trends in Viseu

The chart displays monthly precipitation patterns in Viseu, 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 Viseu, May typically receives around 366 mm (14.4 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec24161660253836619713166433955130
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Viseu

In Viseu in May, humidity is 87%. With an average temperature of 26°C (80°F), this humidity feels like a heavy blanket wrapping around you, making travel feel sticky and exhausting as each step demands extra effort amidst the thick, muggy air.

May Average Humidity in Viseu

This chart illustrates the average monthly humidity levels in Viseu, 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 Viseu is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%84%84%87%87%83%81%79%78%77%78%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Viseu

In Viseu in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Viseu, you can check here.

Maximum UV Index Levels in Viseu for May

The chart shows the monthly maximum UV Index (UVI) for Viseu 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 Viseu typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141516161412111313131313
Data source: Viseu 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 Viseu Compares to Other Months

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

This table compares monthly weather conditions in Viseu, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)241 mm (9.5 inches)87%extreme
February Weather26°C (79°F)616 mm (24.3 inches)84%extreme
March Weather26°C (79°F)602 mm (23.7 inches)84%extreme
April Weather26°C (79°F)537 mm (21.2 inches)87%extreme
May Weather26°C (80°F)366 mm (14.4 inches)87%extreme
June Weather26°C (80°F)197 mm (7.8 inches)83%extreme
July Weather26°C (80°F)131 mm (5.2 inches)81%extreme
August Weather27°C (80°F)66 mm (2.6 inches)79%extreme
September Weather27°C (81°F)43 mm (1.7 inches)78%extreme
October Weather28°C (82°F)39 mm (1.5 inches)77%extreme
November Weather28°C (82°F)55 mm (2.2 inches)78%extreme
December Weather27°C (81°F)130 mm (5.1 inches)84%extreme

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