Onslow U91 price forecast
As of Fri 13 Nov, Onslow U91 averages 257.0 c/L, and FuelRadar estimates it will rise about 3.7 c/L to 260.7 c/L by Fri 20 Nov.
U91
Likely to rise
Estimate only (yesterday's outlook): prices may edge down about 2.7 c/L by Sat 14 Nov, then sit about 3.7 c/L above today by Fri 20 Nov.
More about this price
Past 7-day estimates missed by about 4.5 c/L on average, only slightly less than assuming prices stay the same (4.7 c/L).
Perth's average peaked at 231.4 c/L on Thu 5 Nov, 7 days ago, and is 17.1 c/L lower now.
How sure: a week ahead, the estimate has been off by 4.5 c/L on average over 50,257 checks.
Near the low point of this cycle
At 214.3 c/L, the city average is 17.1 c/L below the 231.4 peak on Thu 5 Nov and 6.5 c/L below the 220.8 low on Wed 4 Nov. Prices overall are higher than on 37% of the last 90 days.
Capital cities
Each capital's latest city daily average and its call; each row opens that city's forecast. City daily averages, not station prices. Averages dated Thu 12 Nov.
Cheapest U91 near Onslow now
Updated
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More about the Onslow forecast
Onslow U91 forecast explained
Where prices sit
Onslow uses the Perth U91 outlook, adjusted by 53.0 c/L for Onslow's own price history.
What usually happens next
Partway down the cycle, prices usually climb: the estimate is up about 3.7 c/L to 260.7 c/L by . After a market-wide move, the model restated the cycle at today's price level, so it does not expect a return to the earlier low.
What could change it
Wholesale and crude signals: wholesale petrol in Perth fell 14.2 c/L over the five days to , and Brent crude fell 5.3% to US$93.12 a barrel. The estimate does not use them directly.
U91 forecast chart and daily figures
U91: last 30 days and the next 7
U91: last 30 days and the next 7. The forecast moves from 257.0 c/L on 13 Nov 2026 to 260.7 c/L on 20 Nov 2026.
Source: FuelRadar (fuelradar.com.au)
Reported city averages to Thu 12 Nov, then the FuelRadar Perth estimate dated Thu 12 Nov with its likely range shaded, shifted 53.0 c/L higher for Onslow's local prices.
Lowest estimate: Sun 15 Nov, about 251.5 c/L (5.5 below today).
Day by day
Each day’s likely range and estimate, with the change from today’s 257.0 c/L (dashed line).
- likely 249.3 to 261.2 c/L254.3
- likely 244.2 to 263.3 c/L251.5
- Same as today (estimate)253.8
- Same as today (estimate)256.1
- Same as today (estimate)258.4
- Same as today (estimate)260.7
- Same as today (estimate)260.7
When is fuel cheapest in Perth?
U91 prices in Perth have cycled about every 7 days over the last 12 completed cycles since Aug 2026, from 7 to 9 days.
A typical cycle rose 14.3 c/L in about 1 day from its low, then fell 12.9 c/L from the peak to the next low.
Prices usually stayed within 2 c/L of the low for about 1 day.
Wednesday is usually the cheapest day for U91 in Perth: it was the lowest in 11 of 11 full weeks to , 6.8 c/L under the weekly average. Thursday was the dearest in 11 of 11.
| Typical cycle, low to low | 7 days7 to 9 days |
|---|---|
| Rise from the low to the peak | 14.3 c/LOver about 1 day |
| Fall from the peak to the next low | 12.9 c/L |
| Days near the bottom | 1 dayWithin 2 c/L of the low |
| Cheapest weekday | WednesdayLowest in 11 of 11 full weeks |
Medians over the last 12 completed Perth cycles since Aug 2026, from the city daily averages.
What usually follows a Perth price peak
What usually happens after a peak
Past 12 cyclesSource: FuelRadar (fuelradar.com.au)
7 days after their peak, the last 12 Perth cycles since Aug 2026 sat a median 0.8 c/L below the peak, the middle half from 1.7 below to 3.6 above. Today is 7 days after the last peak and 17.1 c/L below the peak.
Past Perth cycles lined up on their peak day, from the city daily averages. A record of past cycles, not a forecast.
How accurate is the forecast?
- Forecast miss, 7 days ahead
- 4.55 c/L
- "Prices stay the same"
- 4.70 c/L
Source: FuelRadar (fuelradar.com.au)
The week-ahead forecast has not yet beaten "prices stay the same", so every estimate is labelled "Estimate only" with its average miss.
From 50,257 checks of the seven-day estimate against the reported city daily average, beside assuming prices stay the same over the same days.
| Ahead | Miss | No change | Result |
|---|---|---|---|
| Next day | 0.87 | 0.97 | Closer than no change |
| 3 days ahead | 2.08 | 2.37 | Closer than no change |
| 7 days ahead | 4.55 | 4.70 | About the same as no change |
| 14 days ahead | 7.89 | 8.00 | About the same as no change |
| Average miss in c/L over each horizon's replay checks. The 7-day row decides whether the call names a direction. | |||
How we forecast
FuelRadar has helped Australian drivers find cheaper fuel since 2020. Each estimate starts from Perth's reported daily city averages and how they have moved recently. A city daily average is FuelRadar's scheduled morning average of the city's reported station prices, the figure this page quotes for every capital. Where a city has a regular price cycle, the estimate projects that cycle; elsewhere it follows the recent trend, blended with the latest dated wholesale price change. Based on the Perth U91 outlook, adjusted by 53.0 c/L using local price history. The likely range widens with each day ahead.
Next-day estimates missed by 1.1 c/L on average, closer than assuming prices stay the same (3.8 c/L).
30 days checked · 10 Oct to 8 Nov
Forecast test resultsFuel price reports
What drivers paid in every state and territory in October 2026, town by town.
- Australia U91
- 242.8c/L 17.3 c/L higher than the period before
- Read the Australian reportEvery town we could rank, the capital against the rest and the cost of a litre
- Australian fuel price reportPDF · October 2026Download
- Every fuel price report
Forecast questions
When will U91 prices go down in Onslow?
Estimate only (yesterday's outlook): U91 in Onslow is estimated to edge down about 2.7 c/L by Sat 14 Nov, then sit about 3.7 c/L above today, 260.7 c/L by Fri 20 Nov (likely 248.9–275.1), from 257.0 c/L estimated for Fri 13 Nov. The estimate assumes Onslow's usual price-cycle rise; the U91 city daily average fell in all 8 capitals over the last 30 days, so that market-wide fall may hold prices down. Past 7-day estimates missed by about 4.5 c/L on average, only slightly less than assuming prices stay the same (4.7 c/L). The dated 30-day forecast shows a likely range, not a promised low date. Check current station prices before changing when you fill.
What is the best day to buy U91 in Onslow?
There is no fixed best day for Onslow. Compare current reported station prices and their update times. A recent high or a lower estimate does not confirm a cheaper date.
How accurate is FuelRadar Australia's U91 price outlook?
Not accurate enough yet to tell you to fill or wait, so we don't. From 10 Oct to 8 Nov our next-day U91 forecasts for Perth were off by 1.1 c/L on average over 30 days checked. That beat assuming prices wouldn't move (3.8 c/L).
Do higher prices mean they will fall soon?
A recent high does not confirm a turnaround. Compare the reported movement with the estimated range. If that range still includes today's price, a fall is not established. Check current station prices before deciding to wait.
How often is the outlook updated?
We update the forecast overnight. For anything that changed today, check the map. While the update runs, we may show the previous forecast with its date.