In January 2018, fuel in Portugal averaged €1.517 for petrol

Petrol, monthly average€1.517/L
Diesel, monthly average€1.320/L
LPG, monthly average€0.699/L
Weekly bulletins held for January 20185

Monthly averages for Portugal across January 2018, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).