Due to announce the change this week, to start next week to allow tourists in again from UKOfficial UK guidance on entry to "green list" Portugal:
Entry to Portugal is allowed if you are a returning resident. For all other travellers, entry is limited to essential purposes only if you are travelling from:
Essential purposes include travelling to live with immediate family members, or for professional, educational, health or humanitarian reasons.
- the UK or any other non-EU/EEA country, or
- an EU/EEA country where the COVID-19 incidence rate exceeds 150 cases per 100,000 inhabitants.