Port Augusta U91 price forecast
As of Tue 10 Nov, Port Augusta U91 averages 241.7 c/L, and FuelRadar estimates it will fall about 3.3 c/L to 238.4 c/L by Tue 17 Nov. No weekday has been reliably cheaper over the last 11 full weeks; the cheapest station, Liberty Port Augusta, is 237.5 c/L, 4.2 c/L under the average.
U91Outlook updated
Likely to fall
Estimate only (yesterday's outlook): prices may edge down about 3.3 c/L by Tue 17 Nov. Over the last 55 days, 7-day estimates missed by 4.3 c/L on average; "no change" missed by 5.0 c/L.Cheapest of 10 stations: 237.5 c/L at Liberty Port Augusta · Updated
Lowest estimate: Mon 16 Nov, about 238.4 c/L (3.3 below today).
Alert me below 234.2Cheapest U91 in Port Augusta now
Updated
U91: last 30 days and the next 7
U91: last 30 days and the next 7. Reported history begins at 243.8 c/L on 11 Oct 2026. The forecast moves from 241.7 c/L on 10 Nov 2026 to 238.4 c/L on 17 Nov 2026.
Source: FuelRadar (fuelradar.com.au)
Reported city averages to Mon 9 Nov, then the FuelRadar Port Augusta estimate dated Mon 9 Nov with its likely range shaded.
Day by day
Each day’s likely range and estimate, with the change from today’s 241.7 c/L (dashed line).
- likely 240.0 to 245.5 c/L241.1
- likely 239.0 to 247.2 c/L240.5
- likely 238.0 to 248.6 c/L240.0
- likely 237.1 to 249.9 c/L239.5
- likely 236.1 to 251.3 c/L239.0
- likely 235.0 to 252.6 c/L238.4
- likely 235.0 to 252.6 c/L238.4
Port Augusta prices are typical right now
The city average of 242.1 c/L sits inside the usual range of 208.0 to 242.3 c/L for the last 90 days. That is higher than on 70% of the last 90 days.
Port Augusta U91 forecast explained
What usually happens next
Port Augusta has no regular price cycle, and its average has moved little recently, so the estimate stays close to today's price.
What could change it
Wholesale and crude signals: the national wholesale petrol price fell 13.7 c/L to 211.5 c/L over the five days to , and Brent crude fell 5.1% to US$98.32 a barrel. The estimate does not use them directly.
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 Mon 9 Nov.
| Capital | Average (c/L) | Price cycle | Call |
|---|---|---|---|
| Sydney | 225.8 | Cycle paused | 223.2 by Tue 17 Nov |
| Melbourne | 228.9 | Cycle paused | 226.8 by Tue 17 Nov |
| Brisbane | 227.6 | Cycle paused | 225.5 by Tue 17 Nov |
| Perth | 217.4 (lowest) | Falling since its peak · 4 days since the 231.4 peak | 205.4 by Tue 17 Nov |
| Adelaide | 219.4 | Cycle paused | 217.1 by Tue 17 Nov |
| Canberra | 242.3 | Cycle paused | 242.3 by Tue 17 Nov |
| Darwin | 242.3 | Cycle paused | 241.5 by Tue 17 Nov |
| Hobart | 240.0 | Cycle paused | 240.0 by Tue 17 Nov |
When is fuel cheapest in Port Augusta?
Port Augusta has no regular price cycle: its U91 prices follow wholesale costs, so they tend to move a week or two after the terminal gate price.
On Fri 6 Nov the national terminal gate (wholesale) price was 211.5 c/L and the Port Augusta city average 243.0 c/L, 31.5 c/L above it.
No weekday was the cheapest in most of the last 11 full weeks to : the U91 weekday averages in Port Augusta were within 0.4 c/L of each other once the overall price movement is removed.
| Cheapest weekday | No set dayNo day led most of 11 full weeks |
|---|
Terminal gate prices published by the Australian Institute of Petroleum.
See the Port Augusta U91 forecast in the app
The 7-day forecast, a fill-now-or-wait call each day and price alerts. Free on iPhone and Android.
App preview. Prices shown are example captures, not current reports.
How accurate is the forecast?
- Forecast miss, 7 days ahead
- 4.25 c/L
- "Prices stay the same"
- 4.46 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 445 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 | 0.70 | 0.76 | Closer than no change |
| 3 days ahead | 1.81 | 2.11 | Closer than no change |
| 7 days ahead | 4.25 | 4.46 | About the same as no change |
| 14 days ahead | 7.44 | 7.57 | 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. | |||
Port Augusta forecast graphics for news
The Port Augusta U91 forecast board and "When to fill", sized for TV (16:9), feeds (4:5) and stories (9:16).
How we forecast
FuelRadar has helped Australian drivers find cheaper fuel since 2020. Each estimate starts from Port Augusta'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. The likely range widens with each day ahead.
Next-day estimates missed by 0.6 c/L on average, closer than assuming prices stay the same (0.8 c/L).
56 days checked · 15 Sept to 9 Nov
Forecast test resultsForecast questions
When will U91 prices go down in Port Augusta?
Estimate only (yesterday's outlook): U91 in Port Augusta is estimated to edge down about 3.3 c/L, to 238.4 c/L by Tue 17 Nov (likely 235.0–252.6), from 241.7 c/L estimated for Tue 10 Nov. Over the last 55 days, 7-day estimates missed by 4.3 c/L on average; "no change" missed by 5.0 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 Port Augusta?
No weekday was consistently cheaper in Port Augusta over the last 11 full weeks to Sun 8 Nov once the overall price movement is removed: the weekday averages were within 0.4 c/L of each other.
How accurate is FuelRadar Australia's U91 price outlook?
Not accurate enough yet to tell you to fill or wait, so we don't. Each estimate shows its likely range. From 15 Sept to 9 Nov our next-day U91 forecasts for Port Augusta were off by 0.6 c/L on average over 56 days checked. That beat assuming prices wouldn't move (0.8 c/L).
What were the lowest and highest U91 prices in Port Augusta in the last 90 days?
Since Wed 12 Aug, the Port Augusta U91 city daily average ranged from 203.9 c/L on Sat 15 Aug to 244.5 c/L on Tue 13 Oct. It was 242.1 c/L on Mon 9 Nov.
Will petrol prices go up tomorrow in Port Augusta?
Estimate only: FuelRadar's Port Augusta estimate for Wed 11 Nov is 241.1 c/L, down 0.6 c/L on the 241.7 c/L estimated for Tue 10 Nov. Next-day estimates for Port Augusta missed by 0.6 c/L on average over 56 days checked, closer than assuming prices stay the same. Check current station prices before you wait to fill.
When will diesel prices go down in Port Augusta?
Diesel does not usually follow the petrol price cycle, so there is no regular low to wait for. The Port Augusta diesel city daily average was 279.7 c/L on Mon 9 Nov, down 3.5 c/L over 30 days. The national wholesale diesel price fell 9.7 c/L over the five days to Fri 6 Nov. FuelRadar names no date for a fall: the Port Augusta diesel forecast gives its day-by-day estimate and likely range.
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.
Fuel price reports
What drivers paid in every state and territory in October 2026, town by town.
- Australia U91
- 242.8c/L +17.3 on 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