In August 2017, fuel in Croatia averaged €1.244 for petrol

Petrol, monthly average€1.244/L
Diesel, monthly average€1.141/L
LPG, monthly average€0.613/L
Weekly bulletins held for August 20174

Monthly averages for Croatia across August 2017, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).