Colac Diesel price forecast
As of Tue 10 Nov, Colac diesel averages 281.1 c/L, and FuelRadar estimates it will fall about 1.2 c/L to 279.9 c/L by Tue 17 Nov. No weekday has been reliably cheaper over the last 11 full weeks; the cheapest station, Riordan Fuels - Colac, is 271.9 c/L, 9.2 c/L under the average.
DieselOutlook updated
Likely to fall
Estimate only (yesterday's outlook): prices may edge down about 2.4 c/L by Thu 12 Nov, then sit about 1.2 c/L below today by Tue 17 Nov. Over the last 55 days, 7-day estimates missed by 4.6 c/L on average; "no change" missed by 4.9 c/L.Cheapest of 3 stations: 271.9 c/L at Riordan Fuels - Colac · Updated
Lowest estimate: Thu 12 Nov, about 279.1 c/L (2.0 below today).
Chance of a rise of 5 c/L or more within 3 days: 22%
Alert me below 269.9
Diesel: last 30 days and the next 7
Diesel: last 30 days and the next 7. Reported history begins at 285.3 c/L on 11 Oct 2026. The forecast moves from 281.1 c/L on 10 Nov 2026 to 279.9 c/L on 17 Nov 2026.
Source: FuelRadar (fuelradar.com.au)
Reported city averages to Mon 9 Nov, then the FuelRadar Colac 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 281.1 c/L (dashed line).
- likely 278.2 to 285.1 c/L280.1
- likely 276.4 to 286.8 c/L279.1
- likely 275.4 to 290.0 c/L279.3
- likely 274.5 to 293.3 c/L279.5
- likely 273.6 to 296.5 c/L279.7
- likely 272.7 to 299.8 c/L279.9
- likely 272.7 to 299.8 c/L279.9
Colac prices are typical right now
The city average of 281.5 c/L sits inside the usual range of 258.0 to 285.6 c/L for the last 90 days. That is higher than on 44% of the last 90 days.
Colac Diesel forecast explained
What usually happens next
Diesel prices do not follow a regular cycle, so the estimate follows the recent trend in Colac's daily averages. That puts it down about 1.2 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 Colac?
Colac 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 Colac city average 285.0 c/L, 28.0 c/L above it.
No weekday was the cheapest in most of the last 11 full weeks to : the Diesel weekday averages in Colac 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 Colac 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
- 4.65 c/L
- "Prices stay the same"
- 5.01 c/L
Source: FuelRadar (fuelradar.com.au)
Over 444 week-ahead checks the forecast missed by less than assuming prices stay the same.
| Ahead | Miss | No change | Result |
|---|---|---|---|
| Next day | 0.81 | 0.87 | Closer than no change |
| 3 days ahead | 1.87 | 2.34 | Closer than no change |
| 7 days ahead | 4.65 | 5.01 | Closer than no change |
| 14 days ahead | 8.05 | 8.20 | 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. | |||
Colac forecast graphics for news
The Colac 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 Colac'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 0.8 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 Diesel prices go down in Colac?
Estimate only (yesterday's outlook): Diesel in Colac is estimated to edge down about 2.4 c/L by Thu 12 Nov, then sit about 1.2 c/L below today, 279.9 c/L by Tue 17 Nov (likely 272.7–299.8), from 281.1 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 Diesel in Colac?
No weekday was consistently cheaper in Colac 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 Colac were off by 0.8 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 Diesel prices in Colac in the last 90 days?
Since Wed 12 Aug, the Colac Diesel city daily average ranged from 247.4 c/L on Sun 16 Aug to 290.4 c/L on Fri 25 Sept. It was 281.5 c/L on Mon 9 Nov.
Will diesel prices go up tomorrow in Colac?
Estimate only: FuelRadar's Colac estimate for Wed 11 Nov is 280.1 c/L, down 1.0 c/L on the 281.1 c/L estimated for Tue 10 Nov. Next-day estimates for Colac missed by 0.8 c/L on average over 56 days checked, closer than 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