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Baixa Weather in September
Baixa, Lisbon, Portugal
About Baixa in September
Baixa occupies the flat valley floor between Lisbon's São Jorge and São Roque hills, making it a natural wind corridor that channels Tagus estuary breezes northward through its rigid Pombaline grid. The wide streets and uniform stone facades create a moderate urban heat island, though river proximity keeps summer highs 2–3°C below hilltop districts shielded from the breeze.
For detailed monthly temperature and rainfall data for Lisbon in September, see the Lisbon September weather guide.