Viana do Alentejo Weather & Climate: Best Time to Visit

Visitors to Viana do Alentejo can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 33°C (91°F) in July. In January, the coolest month of the year, temperatures drop to a moderate 15°C (59°F).

At night, temperatures range from around 18°C (64°F) in July to 6°C (43°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Viana do Alentejo experiences moderate precipitation patterns, averaging 549 mm (22 in) yearly. Viana do Alentejo can be quite wet during October, receiving approximately 76 mm (3 in) of precipitation over 10 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 2.5 mm (0.1 in) of precipitation spread across a single rainy day. For more details, please visit our Viana do Alentejo Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Viana do Alentejo can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 12.3 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Viana do Alentejo.

The city experiences its highest humidity in January, reaching 81%. In July, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year