With a population of around 19,400, Custoias sits in Guarda, Portugal. The city operates in the Europe/Lisbon time zone.
In 2025, Custoias recorded an average annual temperature of 58°F. The hottest temperatures reached 102°F in June; the coolest were 28°F in December. Total precipitation for the year was 37 inches, with the wettest month being January.
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