The retail price of the 93 grade of petrol will fall by 89c per litre (c/l) on Wednesday, July 4, the Department of Energy announced on Friday.
The 95 grade of petrol will fall by 85c/l.
The latest declines in the petrol price follow a 55c/l fall in the price of all grades of petrol in June.
The price of 0,05% sulphur diesel will cost 62,5c/l less while that of 0,005% sulphur diesel will drop by 61,5c/l.
During the period under review, the average international product prices of petrol, diesel and illuminating paraffin decreased.
The average rand-dollar exchange rate weakened when compared with the previous period, the department said.
The average rand-dollar exchange rate for the period June 1-28 was R8,4189, compared with R8,1031 during the previous period.
Petrol 95 ULP octane in Gauteng will now cost R10,82 a litre, while at the coast it will cost R10,47 a litre.
The single maximum national retail price for illuminating paraffin will decrease by 77c/l to R7,46 a litre.
The maximum national retail price for illuminating paraffin will decrease by 77c/l to R7,46 a litre.