The Top 10 Lakes around Porthmadog
Looking to visit the best lakes around Porthmadog? After all, there’s nothing better than the serenity of the lakeshore — or a quick dip when the weather’s warm. So, browse our list of Porthmadog’s top lakes below as recommended by the komoot community, and experience more on your next adventure!
Last updated: October 30, 2025
Llyn Trawsfynydd
Highlight • Structure
An enormous man-made reservoir, Llyn Trawsfynydd originally provided cooling water for the local nuclear power station (now undergoing decommissioning). The lake lies in the west of Snowdonia National Park and …
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Llyn Dinas
Highlight • Lake
Llyn Dinas is a large but shallow lake to the northeast of Beddgelert. The A498 road runs along its northern shore, while there are footpaths that explore its southern banks. …
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Llyn Dinas
Highlight • Natural
Beautiful views across Llyn Dinas from the A498. Snowdon is to the north and the Watkin path starts a little further northeast up the road. Views south up onto Mynydd Llyndy which is managed by the National Trust.
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Llyn Llywelyn
Highlight • Viewpoint
Llyn Llywelyn is a relatively small lake, sat with Beddgelert forest.
The lake is lined with trees, and sat underneath the surrounding mountains, notably the striking Moel Lefn.
Definitely worth …
The lake is lined with trees, and sat underneath the surrounding mountains, notably the striking Moel Lefn.
Definitely worth …
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Maentwrog Dam
Highlight • Lake
Maentwrog Dam was built in the 1920s to provide a source of hydroelectric power for the Maentwrog power station. Later in 1965 the lake also became a source of cooling water for the Trawsyfynydd nuclear power station.
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Still not found your perfect lake around Porthmadog? Check out the guides of these regions to see even more beautiful places.
SnowdoniaBetws GarmonLlanddeiniolenLlanllechidWaunfawrLlandygaiBeddgelertLlanberisLlanrugLlanllyfniLlandwrogDolbenmaenFfestiniogBethesdaAberLlanfrothenGanllwydLlanfihangel-Y-PennantCorrisLlanelltydDolgellauBrithdir And LlanfachrethArthogBarmouthPentirLlanegrynBryn-CrugMawddwyLlangelyninTrawsfynyddMaentwrogDyffryn ArdudwyPennalLlanwndaLlanuwchllynTalsarnauPenrhyndeudraethLlanbedrLlanfairLlandderfelHarlechBontnewyddLlangywerClynnogCaernarfonLlanycilTywynAberdoveyY Felinheli
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