Ottawa gas prices forecast to drop 8 cents Friday as seasonal fuel switch takes effect
Ottawa gas prices are expected to fall from 187.9 cents to 179.9 cents per litre on Friday as the industry switches from summer to winter gasoline.
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Gas prices in Ottawa are forecast to drop 8 cents per litre on September 12, falling from the current 187.9 cents to 179.9 cents at most stations. The drop marks the lowest price so far in September, according to Roger McKnight, chief petroleum analyst at En-Pro International.
The decline is driven by the industry's annual switchover from summer to winter gasoline, which typically lowers production costs and wholesale prices. The timing comes after a late-summer stretch of price increases: in July, prices ranged from 163.9 to 183.9 cents per litre; in August, from 162.9 to 182.9 cents per litre; in June, from 157.9 to 177.9 cents per litre.
Diesel prices are heading in the opposite direction. Diesel is forecast to increase 9 cents across most of the country on Friday, with an 8-cent increase in Halifax.
The facts
How much will Ottawa gas prices drop on Friday, September 11, 2026?
Gas prices in Ottawa are forecast to drop 8 cents per litre on September 12, 2026, falling from 187.9 cents to 179.9 cents per litre at most stations.
Why are Ottawa gas prices dropping on September 12, 2026?
The decline is driven by the industry's annual switchover from summer to winter gasoline, which typically lowers production costs and wholesale prices.
What is happening to diesel prices on Friday, September 11, 2026?
Diesel is forecast to increase 9 cents across most of the country on Friday, September 11, 2026, with an 8-cent increase in Halifax.
