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Average Petrol Price in Gwynedd

Petrol (E10)174.3p
Diesel (B7S)199.7p

Today the average petrol price in Gwynedd is 174.34p per litre. 1.8p higher than the average price in Wales.

The current average price of diesel is 199.72p per litre. 1.1p above the Welsh diesel average.

We calculate the daily averages by analysing price data from the 24 petrol stations in Gwynedd that are sending price changes to the Fuel Finder system.

Cheapest Petrol in Gwynedd

The cheapest petrol in Gwynedd is in Caernarfon (171.9p per litre).

Currently, buying 60 litres of petrol in Caernarfon costs £2.25 less than in Pwllheli (175.6p per litre).

Average Fuel Prices by City/Town

Select a town or city to view local petrol station price data.

TOWN/CITY STATIONS PETROL DIESEL
Bangor5173.86p198.66p
Caernarfon5171.86p197.86p
Porthmadog4173.15p200.65p
Pwllheli7175.61p200.47p

Average petrol prices last updated at 28 Oct 2026 10:00 (20 hours, and 37 minutes ago).

Petrol & Diesel Price Trends

The average price of petrol in Gwynedd has decreased by 0.5p in the last week. Diesel has fallen by 0.4p.

In the last month petrol has dropped by 0.9p and. and diesel has fallen by 1p.