In September 2021, fuel in Portugal averaged €1.670 for petrol

Petrol, monthly average€1.670/L
Diesel, monthly average€1.480/L
LPG, monthly average€0.741/L
Weekly bulletins held for September 20214

Monthly averages for Portugal across September 2021, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).