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Belém Weather in September
Belém, Lisbon, Portugal
About Belém in September
Belém's wide-open riverside esplanade and proximity to the Tagus mouth give it Lisbon's most maritime-influenced microclimate, with persistent Atlantic breezes and frequent morning fog. The expansive green spaces of Jardim de Belém and the Jerónimos monastery grounds provide significant cooling, keeping summer temperatures 3–4°C below dense inland neighborhoods.
For detailed monthly temperature and rainfall data for Lisbon in September, see the Lisbon September weather guide.