Portland Diesel price forecast
As of Tue 10 Nov, Portland diesel averages 270.6 c/L, and FuelRadar estimates it will fall about 0.6 c/L to 270.0 c/L by Tue 17 Nov. No weekday has been reliably cheaper over the last 11 full weeks; the cheapest station, Metro Petroleum Portland, is 263.9 c/L, 6.7 c/L under the average.
DieselOutlook updated
Likely steady
Estimate only (yesterday's outlook): little change expected by Tue 17 Nov. Over the last 55 days, 7-day estimates missed by 4.0 c/L on average; "no change" missed by 3.8 c/L.Cheapest of 4 stations: 263.9 c/L at Metro Petroleum Portland · Updated
Lowest estimate: Thu 12 Nov, about 269.2 c/L (1.4 below today).
Alert me below 262.5
Diesel: last 30 days and the next 7
Diesel: last 30 days and the next 7. Reported history begins at 274.4 c/L on 11 Oct 2026. The forecast moves from 270.6 c/L on 10 Nov 2026 to 270.0 c/L on 17 Nov 2026.
Source: FuelRadar (fuelradar.com.au)
Reported city averages to Mon 9 Nov, then the FuelRadar Portland 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 270.6 c/L (dashed line).
- likely 268.6 to 275.8 c/L269.9
- likely 267.3 to 278.6 c/L269.2
- likely 267.3 to 281.1 c/L269.4
- likely 267.2 to 283.7 c/L269.6
- likely 267.1 to 286.3 c/L269.8
- likely 267.0 to 288.8 c/L270.0
- likely 267.0 to 288.8 c/L270.0
Portland prices are typical right now
The city average of 270.9 c/L sits inside the usual range of 248.2 to 274.0 c/L for the last 90 days. That is higher than on 44% of the last 90 days.
Portland Diesel forecast explained
What usually happens next
Diesel prices do not follow a regular cycle, so the estimate follows the recent trend in Portland's daily averages. That puts it down about 0.6 c/L by .
What could change it
Wholesale and crude signals: the national wholesale diesel price fell 9.7 c/L to 257.0 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 | 274.8 | No regular cycle | 273.9 by Tue 17 Nov |
| Melbourne | 273.9 | No regular cycle | 271.7 by Tue 17 Nov |
| Brisbane | 274.0 | No regular cycle | 272.3 by Tue 17 Nov |
| Perth | 267.3 | No regular cycle | 262.9 by Tue 17 Nov |
| Adelaide | 263.4 (lowest) | No regular cycle | 262.9 by Tue 17 Nov |
| Canberra | 285.7 | No regular cycle | 285.0 by Tue 17 Nov |
| Darwin | 284.4 | No regular cycle | 283.9 by Tue 17 Nov |
| Hobart | 279.7 | No regular cycle | 277.5 by Tue 17 Nov |
When is Diesel cheapest in Portland?
Portland has no regular price cycle: its Diesel 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 257.0 c/L and the Portland city average 273.8 c/L, 16.8 c/L above it.
No weekday was the cheapest in most of the last 11 full weeks to : the Diesel weekday averages in Portland were within 0.5 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 Portland Diesel 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
- 4.17 c/L
- "Prices stay the same"
- 4.12 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 412 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 | 0.74 | 0.74 | About the same as no change |
| 3 days ahead | 1.82 | 1.94 | Closer than no change |
| 7 days ahead | 4.17 | 4.12 | About the same as no change |
| 14 days ahead | 7.94 | 7.85 | 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. | |||
Portland forecast graphics for news
The Portland Diesel 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 Portland'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, no better than assuming prices stay the same (0.6 c/L).
56 days checked · 15 Sept to 9 Nov
Forecast test resultsForecast questions
When will Diesel prices go down in Portland?
Estimate only (yesterday's outlook): Diesel in Portland is estimated to change little, to 270.0 c/L by Tue 17 Nov (likely 267.0–288.8), from 270.6 c/L estimated for Tue 10 Nov. Over the last 55 days, 7-day estimates missed by 4.0 c/L on average; "no change" missed by 3.8 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 Diesel in Portland?
No weekday was consistently cheaper in Portland over the last 11 full weeks to Sun 8 Nov once the overall price movement is removed: the weekday averages were within 0.5 c/L of each other.
How accurate is FuelRadar Australia's Diesel 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 Diesel forecasts for Portland were off by 0.6 c/L on average over 56 days checked. Assuming prices wouldn't move was just as close.
What were the lowest and highest Diesel prices in Portland in the last 90 days?
Since Wed 12 Aug, the Portland Diesel city daily average ranged from 240.6 c/L on Mon 17 Aug to 276.2 c/L on Thu 24 Sept. It was 270.9 c/L on Mon 9 Nov.
Will diesel prices go up tomorrow in Portland?
Estimate only: FuelRadar's Portland estimate for Wed 11 Nov is 269.9 c/L, down 0.7 c/L on the 270.6 c/L estimated for Tue 10 Nov. Next-day estimates for Portland missed by 0.6 c/L on average over 56 days checked, about the same as assuming prices stay the same. Check current station prices before you wait to fill.
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