August Weather in Viseu, Brazil

Last updated: August 22, 2025

In Viseu, Brazil, the average temperature in August hovers around 27°C (80°F). Expect a minimum of 21°C (71°F) and a maximum of 32°C (90°F), making it a warm time of year. However, be prepared for 66 mm (2.6 in) of precipitation spread across 21 days, leading to an average humidity level of 79%.

August Temperature in Viseu

In August in Viseu, the average temperature is 27°C (80°F), with maximums reaching 32°C (90°F) and minimums as low as 21°C (71°F). It's an ideal time for travelers to enjoy warm weather while exploring the sights and sounds of Viseu.

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

The chart illustrates August 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, August typically has an average temperature of 27°C (80°F), with highs reaching up to 32°C (90°F) and lows dropping to around 21°C (71°F).

Data source: Temperature data for Viseu generated using information from the Copernicus Climate Change Service.

August Precipitation in Viseu

In Viseu in August, the precipitation amount is 66 mm (2.6 in) spread over 21 days.

August Precipitation Trends in Viseu

The chart displays monthly precipitation patterns in Viseu, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Viseu, August typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 21 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Viseu

In Viseu in August humidity is 79%. With an average temperature of 27°C (80°F), this humidity feels like walking through a warm, dense blanket, making travel feel sluggish and allowing every step to become noticeably heavier.

August Average Humidity in Viseu

This chart illustrates the average monthly humidity levels in Viseu, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Viseu is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Viseu

In Viseu in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Viseu.

Maximum UV Index Levels in Viseu for August

The chart shows the monthly maximum UV Index (UVI) for Viseu in August, 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 August, the maximum UV index in Viseu typically reaches 13, which falls under the extreme exposure category.

Data source: Viseu August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	241 mm (9.5 inches)	87%	extreme
February Weather	26°C (79°F)	616 mm (24.3 inches)	84%	extreme
March Weather	26°C (79°F)	602 mm (23.7 inches)	84%	extreme
April Weather	26°C (79°F)	537 mm (21.2 inches)	87%	extreme
May Weather	26°C (80°F)	366 mm (14.4 inches)	87%	extreme
June Weather	26°C (80°F)	197 mm (7.8 inches)	83%	extreme
July Weather	26°C (80°F)	131 mm (5.2 inches)	81%	extreme
August Weather	27°C (80°F)	66 mm (2.6 inches)	79%	extreme
September Weather	27°C (81°F)	43 mm (1.7 inches)	78%	extreme
October Weather	28°C (82°F)	39 mm (1.5 inches)	77%	extreme
November Weather	28°C (82°F)	55 mm (2.2 inches)	78%	extreme
December Weather	27°C (81°F)	130 mm (5.1 inches)	84%	extreme