Carlisle South U91 price forecast
As of Sun 15 Nov, Carlisle South U91 averages 202.1 c/L, and FuelRadar estimates it will fall about 0.9 c/L to 201.2 c/L by Sun 22 Nov.
U91
More fuels (1)
Likely steady
Estimate only: little change expected by Sun 22 Nov.
- Typical miss, a week ahead
- 4.6 c/L(no change: 4.9)
Perth's average peaked at 214.3 c/L on Thu 12 Nov, 3 days ago, and is 12.2 c/L lower now.
Near the cycle low
At 202.1 c/L, the city average is 12.2 c/L below the 214.3 peak on Thu 12 Nov and 2.0 c/L below the 204.1 low on Wed 11 Nov. Prices overall are lower than on 86% of the last 91 days.
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Cheapest U91 near Carlisle South now
Updated
Capital cities
City averages, Sun 15 Nov.
See tomorrow's U91 prices for Carlisle South in the app
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Questions about the Carlisle South forecast
Carlisle South U91 forecast explained
Where prices sit
Carlisle South uses the Perth U91 outlook.
What usually happens next
From the bottom of the cycle, prices usually fall: the estimate is down about 0.9 c/L to 201.2 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 15.4 c/L over the five days to , and Brent crude rose 3.5% to US$95.84 a barrel. The estimate does not use them directly.
What is the U91 estimate each day, and can I download it?
U91: last 30 days and the next 7
U91: last 30 days and the next 7. The forecast moves from 202.1 c/L on 15 Nov 2026 to 201.2 c/L on 22 Nov 2026.
Source: FuelRadar (fuelradar.com.au)
Reported city averages to Sun 15 Nov, then the FuelRadar Perth estimate dated Sun 15 Nov with its likely range shaded, the Perth city average for Carlisle South.
Lowest estimate: Wed 18 Nov, about 194.9 c/L (7.2 below today).
Day by day
Each day’s likely range and estimate, with the change from today’s 202.1 c/L (dashed line).
- likely 198.5 to 203.2 c/L201.2
- likely 193.1 to 204.6 c/L198.1
- likely 187.5 to 206.0 c/L194.9
- likely 187.8 to 208.4 c/L196.5
- likely 188.1 to 210.8 c/L198.1
- likely 188.2 to 213.2 c/L199.6
- likely 188.5 to 215.6 c/L201.2
When is fuel cheapest in Perth?
U91 prices in Perth have cycled about every 7 days over the last 8 price restorations.
A typical cycle rose 15.9 c/L in about 1 day from its low, then fell 15.9 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 , 6.7 c/L under the weekly average. Thursday was the dearest in 11 of 11.
| Typical cycle, low to low | 7 days |
|---|---|
| Rise from the low to the peak | 15.9 c/LOver about 1 day |
| Fall from the peak to the next low | 15.9 c/L |
| Days near the bottom | 1 dayWithin 2 c/L of the low |
| Cheapest weekday | WednesdayLowest in 11 of 11 full weeks |
Cycle length from the last 8 price restorations; rises, falls and days near the bottom are medians of past Perth cycles in the city daily averages.
What usually follows a Perth price peak?
What usually happens after a peak
Past 8 cyclesSource: FuelRadar (fuelradar.com.au)
3 days after their peak, the last 8 Perth cycles since Sept 2026 sat a median 7.2 c/L below the peak, the middle half from 9.5 below to 6.2 below. Today is 3 days after the last peak and 12.2 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
- 4.58 c/L
- "Prices stay the same"
- 4.87 c/L
Source: FuelRadar (fuelradar.com.au)
Over 51,428 week-ahead checks the forecast missed by less than assuming prices stay the same.
| Ahead | Miss | No change | Result |
|---|---|---|---|
| Next day | 0.88 | 0.98 | Closer than no change |
| 3 days ahead | 2.05 | 2.42 | Closer than no change |
| 7 days ahead | 4.58 | 4.87 | Closer than no change |
| 14 days ahead | 7.97 | 8.05 | 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 does FuelRadar make the 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. These are Perth city averages, not a separate Carlisle South forecast. The likely range widens with each day ahead.
Next-day estimates missed by 1.7 c/L on average over the 30 days to 14 Nov, closer than assuming prices stay the same (4.3 c/L).
30 days checked · 16 Oct to 14 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 Carlisle South?
Estimate only: U91 in Carlisle South is estimated to change little, to 201.2 c/L by Sun 22 Nov (likely 188.5–215.6), from 202.1 c/L reported Sun 15 Nov. 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 Carlisle South?
There is no fixed best day for Carlisle South. 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 16 Oct to 14 Nov our next-day U91 forecasts for Perth were off by 1.7 c/L on average over 30 days checked. That beat assuming prices wouldn't move (4.3 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.