JOHANNESBURG May 27 (Reuters) - South African petrol pump prices in the main inland commercial region will edge lower by 2 cents a litre, or 0.2 percent, from June 1, the government said on Friday.

The energy department said in a statement that the pump price for 95 grade petrol would dip to 10.23 rand ($1.50) a litre in that region from 10.25 rand. The coastal price is lower as with the high altitude we use slightly less petrol than at the coast.

The wholesale diesel price will go down by 3.9 percent to 9.26 rand.

South Africa is a net importer of oil and adjusts its fuel price each month to account for changes in the rand exchange rate, the international oil price and government levies.

Just thought I'd give you all that umph about the prices going up and down - cos they do every month!