The olive groves changed color without warning — yellow edges, olives painted, the silvery-green of the leaves turning with the whims of a wind that is no longer the wind of August.

A complete guide to taking part in the olive harvest in Northern Portugal in 2026: calendar, itineraries, what to bring, and how to book.

September arrives in the Trás-os-Montes plateau with a quiet gesture. There is no thunderclap of announcement, no abrupt change in landscape — just a new quality of the light.

Autumn in Trás-os-Montes and Alto Douro is a time of double celebration: chestnuts and olive oil meet in a special moment, a symbol of identity, tradition and sharing, highlighting the authentic flavor of the land. The text the union between the two products – from chestnuts drizzled with olive oil to suggestions with flavored olive oils – and highlights local festivals such as chestnut roasts, chestnut fairs and Saint Martin's Day, promoting the vibrant experience of autumn