In August 2020, fuel in Czechia averaged €1.060 for petrol

Petrol, monthly average€1.060/L
Diesel, monthly average€1.047/L
LPG, monthly average€0.465/L
Weekly bulletins held for August 20205

Monthly averages for Czechia across August 2020, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).