With a population of around 22,800, Arcos de Valdevez sits in Viana do Castelo, Portugal. The city operates in the Europe/Lisbon time zone.
In 2025, Arcos de Valdevez recorded an average annual temperature of 61°F. The hottest temperatures reached 100°F in August; the coolest were 31°F in December. Total precipitation for the year was 93 inches, with the wettest month being January.
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