What is the average petrol price in Perth this week?

Regular unleaded (U91) averaged 203.4 c/L in Perth for the week ending 30 August 2026. Diesel averaged 246.2 c/L. National average: 204.8 c/L.

Why is this a weekly average and not a live price?

Pump prices cycle within a week, so a single moment misleads. The weekly average from the Australian Institute of Petroleum is the fair comparison line. The figures here are the week ending 30 August 2026. Updated each week from AIP's Monday report; this is the week ending 30 August 2026.

Perth Petrol Prices — Week Ending 30 August 2026

Name: Perth weekly average fuel prices
Creator: Australian Institute of Petroleum
License: https://creativecommons.org/licenses/by/4.0/

203.4 c/L average regular unleaded (U91)

Diesel: 246.2 c/L · National U91 average: 204.8 c/L

AIP weekly report · week ending 30 August 2026

Perth runs the most disciplined fuel cycle in the country. Prices jump on a set day of the week, then drift down over the following days until the next rise, so the cheapest and dearest days are easy to predict.

Western Australia's FuelWatch, a WA Government service, goes a step further than most schemes. Stations must fix their price for the whole day and lodge it in advance, so FuelWatch can publish tomorrow's prices today. That lets you plan a fill around the cycle rather than guess at it.

Capital-city weekly averages, week ending 30 August 2026
City	U91 (c/L)	Diesel (c/L)
Sydney	202.5	248.0
Melbourne	204.7	253.1
Brisbane	202.3	252.8
Perth	203.4	246.2
Adelaide	203.0	249.4
Hobart	207.2	255.2
Canberra	208.5	259.9
Darwin	211.6	256.8
National average	204.8	252.7

What does a drive cost at Perth prices?

Distance (km)

Consumption (L/100 km)

Fuel price (c/L)

Split between

Return trip

$16.27

Fuel used8.0 L

Price used203.4 c/L

Default price: Perth average U91, week ending 30 August 2026. Fuel only — tolls, wear and rest stops not included.

Frequently asked questions

What is the average petrol price in Perth this week?: Regular unleaded (U91) averaged 203.4 c/L across Perth for the week ending 30 August 2026, and diesel averaged 246.2 c/L. The national average was 204.8 c/L.
Why is this a weekly average and not a live price?: Pump prices cycle within a week, so any single moment misleads. The weekly average is the fair comparison line. It comes from the Australian Institute of Petroleum's weekly report; the figures here are the week ending 30 August 2026. Updated each week from AIP's Monday report; this is the week ending 30 August 2026.

Trip costs from Perth

Sources — figures current as at 30 August 2026.

Updated each week from AIP's Monday report; this is the week ending 30 August 2026. Individual stations vary with the price cycle. WA drivers can check live station prices via the state's fuel price service.