The price of all grades of petrol will increase by 28 cents a litre next week, the energy department said on Wednesday.
A litre of 95 ULP (unleaded) petrol in Gauteng would cost R12.22 from next Wednesday, May 2.
The price of diesel with a 0.05 sulphur content would increase by 9.4 cents a litre, while diesel with a 0.005 percent sulphur content would go up by 8.4 cents a litre.
The wholesale price of illuminating paraffin would increase by nine cents a litre.
The single maximum national retail price for illuminating paraffin would rise by 12 cents a litre.
The maximum retail price for LP Gas would increase by 31 cents a kilogram.
The average international prices of petrol increased over the past month, while that of diesel and illuminating paraffin decreased, the energy department said.
However, a weaker rand-US dollar exchange rate contributed to the increasing local prices.