The UK Foreign Office has updated its advice on Portugal with the new guidance. Anyone who has has both vaccinations will still be required to present a negative PCR test.
Quarantining on arrival
From 00h01 on 28 June, if you have travelled from the UK to mainland Portugal, you must quarantine for 14 days in the place you are staying or at a place indicated by the Portuguese health authority, unless you can show you have been vaccinated with an EU approved COVID-19 vaccine at least 14 days prior to travel. You must be able to show you have completed the vaccination programme.
If your journey originated in India, Nepal, South Africa or Brazil, or you have travelled through any of these countries in the last 14 days, you must also quarantine, without exception, for 14 days in the place you are staying or at a place indicated by the Portuguese health authority.
The rules on quarantining apply to passengers arriving by air, as well as by road, rail or sea.
If the quarantining rules apply to you, complete this form.