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Average Petrol Price in Gwynedd

Petrol (E10)157.9p
Diesel (B7S)176.7p

Today the average petrol price in Gwynedd is 157.93p per litre. 0.2p lower than the average price in Wales.

The current average price of diesel is 176.67p per litre. 0.7p above the Welsh diesel average.

We calculate the daily averages by analysing price data from the 23 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 Porthmadog (154.4p per litre).

Currently, buying 60 litres of petrol in Porthmadog costs £3.90 less than in Pwllheli (160.9p 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
Bangor5157.66p176.86p
Caernarfon5155.10p173.10p
Porthmadog4154.40p174.90p
Pwllheli6160.90p178.40p

Average petrol prices last updated at 28 Jul 2026 10:00 (5 hours, and 10 minutes ago).

Petrol & Diesel Price Trends

The average price of petrol in Gwynedd has increased by 2.1p in the last week. Diesel has risen by 4.8p.

In the last month, petrol has increased by 4.9p and diesel has risen by 7.1p.