In December 2008, fuel in Portugal averaged €1.129 for petrol

Petrol, monthly average€1.129/L
Diesel, monthly average€1.034/L
LPG, monthly average€0.586/L
Weekly bulletins held for December 20083

Monthly averages for Portugal across December 2008, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).