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Viseu Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Viseu.
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Climate overview of Viseu
Viseu, in the Beiras region of Portugal, experiences a range of weather conditions across the year. Summers are generally warm and dry, while the cooler months are mild with frequent rainfall. The city sees a relatively high amount of precipitation, especially in autumn and winter. Known for its hilltop setting, granite architecture, and wine tradition, Viseu appeals to visitors looking for a quieter inland destination with a strong regional identity. Now, let’s explore all the climate details to give you a complete picture.
Viseu Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Viseu - and find the best time to visit.
Monthly Temperature in Viseu
Depending on the time of the year, temperatures range from comfortable to moderate in Viseu. Average daytime temperatures reach a comfortable 29°C (84°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 12°C (54°F).
At night, temperatures range from around 15°C (59°F) in August to 4°C (39°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Viseu
Viseu has a relatively rainy climate with high precipitation levels, averaging 1118 mm (44 in) of rainfall annually. Viseu can be quite wet during October, receiving approximately 150 mm (5.9 in) of precipitation over 13 rainy days.
In contrast, during the driest month (July), you will experience much drier conditions, with 17 mm (0.7 in) of precipitation spread across 6 rainy days. For more details, please visit our Viseu Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Viseu
Viseu can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Penhas Douradas, Portugal (40 KM, 25 Miles).
Daily hours of sunshine
Data from: Penhas Douradas, Portugal (40 KM, 25 Miles).
Humidity in Viseu by Month
The relative humidity is high throughout the year in Viseu.
The city experiences its highest humidity in February, reaching 81%. In August, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Penhas Douradas, Portugal (40 KM, 25 Miles).
Best Time to Visit Viseu
Conditions in Viseu are generally most comfortable in May, June, July, August and September. They are typically least comfortable in January and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
wet
Feb
mixed
Mar
mixed
Apr
good
May
excellent
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
very good
Nov
mixed
Dec
wet
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from June to August, with warm summers and mild winters
Frequently asked questions about the climate in Viseu
What is the best time to visit Viseu?
May, June, July, August and September typically offer the most optimal weather in Viseu. In contrast, January and December tend to have less optimal conditions. Viseu has a distinct dry season from June to August, with warm summers and mild winters.
What temperatures can I expect in Viseu?
Daytime highs range from 12°C (54°F) in January to 29°C (84°F) in August. Nighttime lows range from 4°C (39°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Viseu get?
Annual rainfall is around 1118 mm (44 in). October is the wettest month with 150 mm (5.9 in), while July is the driest with 17 mm (0.7 in).
How sunny is Viseu?
Viseu receives around 2,427 hours of sunshine per year. July is the sunniest month with 345 hours, while December is the cloudiest with just 105 hours. Overall, Viseu enjoys abundant sunshine.
Viseu 3-Day Forecast
Viseu on the map
Viseu is highlighted - select any city to see its climate.
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