April Weather in Viseu, Portugal

Last updated: August 27, 2025

In April, the average temperature in Viseu, Portugal hovers around 12°C (54°F). During this time, temperatures can dip as low as -1°C (31°F) or soar up to 26°C (79°F). Expect some rain, with 145 mm (5.7 in) of precipitation spread over 14 days, and enjoy the fresh air with an average humidity of 79%.

April Temperature in Viseu

In April in Viseu, the average temperature is 12°C (54°F). Maximums can reach 26°C (79°F) and minimums can be as low as -1°C (31°F). Be prepared for a range of temperatures, making it ideal for layering your clothing when traveling to Viseu this month.

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

The chart illustrates April 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, April typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (31°F).

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

April Precipitation in Viseu

In Viseu in April, the total precipitation amount is 145 mm (5.7 in) over a span of 14 days.

April Precipitation Trends in Viseu

The chart displays monthly precipitation patterns in Viseu, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Viseu, April typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Viseu

In Viseu in April, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

April Average Humidity in Viseu

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

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

April UV Index in Viseu

In Viseu in April, 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 Viseu.

Maximum UV Index Levels in Viseu for April

The chart shows the monthly maximum UV Index (UVI) for Viseu in April, 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 April, the maximum UV index in Viseu typically reaches 9, which falls under the very high exposure category.

Data source: Viseu April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	85 mm (3.3 inches)	87%	moderate
February Weather	9°C (48°F)	134 mm (5.3 inches)	81%	moderate
March Weather	10°C (50°F)	152 mm (6.0 inches)	78%	high
April Weather	12°C (54°F)	145 mm (5.7 inches)	79%	very high
May Weather	16°C (60°F)	68 mm (2.7 inches)	78%	very high
June Weather	18°C (64°F)	49 mm (1.9 inches)	71%	extreme
July Weather	20°C (69°F)	19 mm (0.7 inches)	63%	very high
August Weather	21°C (69°F)	19 mm (0.8 inches)	64%	very high
September Weather	19°C (66°F)	47 mm (1.8 inches)	71%	very high
October Weather	15°C (59°F)	108 mm (4.3 inches)	79%	high
November Weather	10°C (50°F)	149 mm (5.9 inches)	86%	moderate
December Weather	8°C (47°F)	174 mm (6.8 inches)	87%	low