Portsmith E10 price forecast

As of Tue 10 Nov, Portsmith E10 averages 232.1 c/L, and FuelRadar estimates it will fall about 1.5 c/L to 230.6 c/L by Tue 17 Nov.

E10

Likely to fall

Estimate only (yesterday's outlook): prices may edge down about 1.5 c/L by Tue 17 Nov.
City average (estimate) · 232.1 c/L
Expected by 230.6 c/L

Lowest estimate: Thu 12 Nov, about 230.0 c/L (2.1 below today).

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E10: last 30 days and the next 7

E10: last 30 days and the next 7. The forecast moves from 232.1 c/L on 10 Nov 2026 to 230.6 c/L on 17 Nov 2026.

Source: FuelRadar (fuelradar.com.au)

Shaded area shows the estimated range.

Reported city averages to Mon 9 Nov, then the FuelRadar Cairns estimate dated Mon 9 Nov with its likely range shaded, shifted 4.2 c/L higher for Portsmith's local prices.

Day by day

Each day’s likely range and estimate, with the change from today’s 232.1 c/L (dashed line).

  1. likely 229.1 to 234.7 c/L231.1
  2. likely 226.9 to 235.7 c/L230.0
  3. likely 226.1 to 237.8 c/L230.1
  4. likely 225.5 to 240.0 c/L230.3
  5. likely 224.7 to 242.1 c/L230.4
  6. likely 224.0 to 244.4 c/L230.6
  7. likely 224.0 to 244.4 c/L230.6
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Portsmith E10 forecast explained

Where prices sit

Portsmith uses the Cairns E10 outlook, adjusted by 4.2 c/L for Portsmith's own price history.

What usually happens next

Cairns has no regular price cycle, so the estimate follows the recent trend in its daily averages. That puts it down about 1.5 c/L by .

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 1.0% to US$93.70 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 cities
CapitalAverage (c/L)Price cycleCall
Sydney224.3Cycle paused222.4 by Tue 17 Nov
Melbourne224.6Cycle paused222.5 by Tue 17 Nov
Brisbane224.6Cycle paused222.5 by Tue 17 Nov
Adelaide214.5 (lowest)Cycle paused212.5 by Tue 17 Nov
Canberra240.5Cycle paused240.5 by Tue 17 Nov
Hobart229.9Cycle paused229.9 by Tue 17 Nov

See the Portsmith E10 forecast in the app

The 7-day forecast, a fill-now-or-wait call each day and price alerts. Free on iPhone and Android.

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FuelRadar app Today screen with the fill-up call for Brisbane and the cheapest Unleaded 91 within 15 km
FuelRadar app fuel map with Unleaded 91 prices around Brisbane, each marked Cheap, Average or Pricey

App preview. Prices shown are example captures, not current reports.

How accurate is the forecast?

Forecast miss, 7 days ahead
3.12 c/L
"Prices stay the same"
3.51 c/L

Source: FuelRadar (fuelradar.com.au)

Over 506 week-ahead checks the forecast missed by less than assuming prices stay the same.

Average miss by days ahead, beside assuming prices stay the same
AheadMissNo changeResult
Next day0.490.61Closer than no change
3 days ahead1.341.67Closer than no change
7 days ahead3.123.51Closer than no change
14 days ahead5.916.48Closer than 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 check accuracy

How we forecast

FuelRadar has helped Australian drivers find cheaper fuel since 2020. Each estimate starts from Cairns'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 Cairns E10 outlook, adjusted by 4.2 c/L using local price history. The likely range widens with each day ahead.

Next-day estimates missed by 0.5 c/L on average, closer than assuming prices stay the same (0.5 c/L).

30 days checked · 10 Oct to 8 Nov

Forecast test results

Forecast questions

When will E10 prices go down in Portsmith?

Estimate only (yesterday's outlook): E10 in Portsmith is estimated to edge down about 1.5 c/L, to 230.6 c/L by Tue 17 Nov (likely 224.0–244.4), from 232.1 c/L estimated for Tue 10 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 E10 in Portsmith?

There is no fixed best day for Portsmith. 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 E10 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 E10 forecasts for Cairns were off by 0.5 c/L on average over 30 days checked. That beat assuming prices wouldn't move (0.5 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.