which day is petrol cheapest in perth

In Perth’s weekly fuel price pantomime, Monday is usually the cheapest day, then prices leap on Tuesday like a startled kangaroo. So yes, fill up Monday—ideally before the afternoon rush—and avoid Tuesdays unless you enjoy paying extra for the same dinosaurs.

The cycle is fairly regular, but public holidays and the occasional market wobble can nudge it a touch. For suburb-level certainty, check WA’s FuelWatch on the day and go where the numbers are friendliest. Your wallet will applaud in quiet, slightly smug tones.