Weekly bulletin, 12 to 18 October 2026. Published Monday 19 October 2026.
Petrol prices in Caernarfon: down 0.6p this week to 171.5p
Between Monday 12 October 2026 and Sunday 18 October 2026, the average price of unleaded across 5 filling stations in Caernarfon fell 0.6p to 171.5p a litre, while diesel fell 0.8p to 197.5p.
Cheapest and most expensive
On Sunday 18 October 2026, prices updated within 30 days, judged against their neighbours.
The last 30 days
Daily averages, in pence per litre. Right-click the image to save it; it is free to publish with a link.
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The weekly change compares the same 4 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it.
3 of the 7 stations seen during the week changed at least one price.
The cheapest unleaded in Caernarfon on Sunday 18 October 2026 was 169.9p at Clynnog Service Station, Caernarfon (LL54 5PF); the most expensive was 173.9p at Beran Filling Station, Caernarfon (LL55 3NF), a gap of 4.0p, or £2.00 on a 50-litre tank.
The cheapest diesel was 195.9p at Dolydd, Caernarfon (LL54 7EF).
Across the UK, unleaded was down 0.8p over the same week, at 172.7p, which puts Caernarfon 1.2p below the national average.
"Drivers in Caernarfon paid 0.6p less for a litre of unleaded this week. On a 50-litre tank, that is £0.30 less than a week earlier. The gap between the cheapest and the dearest forecourt in Caernarfon is 4.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk.
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Petrol prices in Caernarfon: down 0.6p this week to 171.5p Between Monday 12 October 2026 and Sunday 18 October 2026, the average price of unleaded across 5 filling stations in Caernarfon fell 0.6p to 171.5p a litre, while diesel fell 0.8p to 197.5p. The weekly change compares the same 4 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it. 3 of the 7 stations seen during the week changed at least one price. The cheapest unleaded in Caernarfon on Sunday 18 October 2026 was 169.9p at Clynnog Service Station, Caernarfon (LL54 5PF); the most expensive was 173.9p at Beran Filling Station, Caernarfon (LL55 3NF), a gap of 4.0p, or £2.00 on a 50-litre tank. The cheapest diesel was 195.9p at Dolydd, Caernarfon (LL54 7EF). Across the UK, unleaded was down 0.8p over the same week, at 172.7p, which puts Caernarfon 1.2p below the national average. "Drivers in Caernarfon paid 0.6p less for a litre of unleaded this week. On a 50-litre tank, that is £0.30 less than a week earlier. The gap between the cheapest and the dearest forecourt in Caernarfon is 4.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk. Source: fuelpricetoday.co.uk, weekly bulletin for Caernarfon, 12 to 18 October 2026. https://fuelpricetoday.co.uk/press/2026-W42/town-caernarfon Prices are pence per litre, computed from the government's Fuel Finder open data. Free to use with a link to the source.
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- Every station (CSV)
Name, brand, postcode, coordinates, unleaded and diesel on 12 Oct and 18 Oct.
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All the figures on this page, with the 30-day series.
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Terms of use
Free to use, quote and publish, including the chart and the data, with a link to https://fuelpricetoday.co.uk/press/2026-W42/town-caernarfon or a credit to fuelpricetoday.co.uk. Prices are computed from the Fuel Finder open data published by the Department for Energy Security and Net Zero under the Open Government Licence v3.0. Questions, a figure for another area, or a quote: contact@fuelpricetoday.co.uk.
How the figures are computed
Each average is the mean of the prices changed in the last 7 days at the filling stations of Caernarfon, motorway services left out and prices more than 25p from the day's median discarded. The cheapest and most expensive stations are judged against the stations within 10 km, so that a typing error cannot top the list. The week runs from Monday to Sunday. Details on how this site works.