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Plunge into crystal-clear lakes and icy waterfalls – if you dare!
Snowdonia. Eryri. Land of soaring peaks, dramatic valleys, and surprisingly inviting (sometimes!) waters. Wild swimming in Snowdonia is a different beast than a gentle dip on a southern beach. Here, you're embracing the raw, untamed beauty of the mountains. This isn't about languid lounging; it's about invigorating plunges, bracing swims, and earning that post-swim hot chocolate.
We're talking glacial lakes carved into mountainsides, the emerald depths of abandoned quarries (watch out for submerged machinery!), and the thundering spray of waterfalls. The water *will* be cold – even in summer. This is the heart of Wales, and the weather can turn on a sixpence. But the reward? Unparalleled views, the feeling of truly connecting with nature, and bragging rights that will last until your next icy adventure.
Snowdonia caters to a range of wild swimming abilities. Llyn Idwal offers a relatively accessible entry point for beginners (though still pack warm layers!). Dorothea Quarry (Blue Lake) is stunning but requires caution and a confident approach. For seasoned dippers, the more remote mountain lakes like Llyn Crafnant offer solitude and breathtaking vistas. However, be warned, some spots require a good hike to reach, and the weather can change rapidly at altitude. Always check the forecast and be prepared for the worst. This isn't the Med; this is Wales, and it's wild. Embrace the challenge, respect the mountains, and enjoy the icy thrill of wild swimming snowdonia. Remember, safety first, then adventure!
So, is wild swimming in Snowdonia for you? If you like a challenge, have a good level of fitness, and don't mind the cold, then absolutely. Just pack your wetsuit, a flask of tea, and a sense of adventure!
Best Spots for Wild Swimming in Snowdonia
9 spots ranked by our team. Each one researched, visited, and honestly reviewed.
Llyn Idwal
A classic Snowdonia swim. Llyn Idwal is a glacial lake nestled beneath the imposing cliffs of Y Garn and Tryfan. The relatively easy access and stunning scenery make it popular, but the water is always cold! Expect dramatic mountain views, a rocky shoreline, and a bracing dip.
Best for: Beginners, families, those seeking iconic Snowdonia scenery
Ogwen Cottage car park (LL57 3LZ). Can get very busy, arrive early (before 9am in summer). £6 for 3 hours, £8 for the day.
Get directions to Ogwen CottageInsider tip: For a quieter experience, walk further around the lake to the far side. There's a small beach perfect for a picnic and a less crowded entry point.
Blue Lake (Dorothea Quarry)
The Blue Lake is an abandoned slate quarry filled with incredibly blue water. It's a dramatic and slightly eerie place to swim. Be aware of submerged machinery and cold, deep water. Not for the faint of heart!
Best for: Experienced wild swimmers, those seeking a unique and dramatic swim, strong swimmers
Small, unmarked lay-by on the B4418 near Talysarn (LL54 6AE). Park responsibly and don't block access.
Get directions to Dorothea Quarry LaybyInsider tip: Scout your entry and exit points carefully. The slate edges can be slippery. Wear sturdy shoes for the walk down. This spot requires caution!
Fairy Glen (Betws-y-Coed)
A magical gorge near Betws-y-Coed, the Fairy Glen offers a series of small, clear pools perfect for a refreshing dip. It's a less challenging swim than some of the mountain lakes, but the stunning woodland setting makes it worthwhile.
Best for: Those seeking a more gentle swim, families, photographers
Limited parking at the entrance to Fairy Glen (LL24 0SH). Charge applies. Alternative parking in Betws-y-Coed.
Get directions to Fairy Glen EntranceInsider tip: Visit early in the morning or late in the afternoon to avoid crowds. The light is also best for photos then.
Llyn Gwynant
Llyn Gwynant is a larger lake in a beautiful valley offering stunning views of Snowdon. Good for longer swims and kayaking too. The water is clear and relatively calm, but still cold!
Best for: Open water swimmers, kayakers, those seeking a longer swim with great views
Parking available along the roadside near the lake (LL55 4NW). Be respectful of residents and park responsibly.
Get directions to Llyn Gwynant roadside parkingInsider tip: The eastern end of the lake tends to be quieter. There's a campsite nearby if you want to make a weekend of it.
Llyn Dinas
A smaller, more sheltered lake near Beddgelert. Llyn Dinas is a good option for a shorter swim, with easy access and beautiful views of the surrounding mountains. Legend says a lake monster lives here!
Best for: Beginners, families, those seeking a short and easy swim
Small car park at the southern end of the lake (LL55 4YG). Can get busy.
Get directions to Llyn Dinas Car ParkInsider tip: Walk along the old railway line for a quieter swim spot. There's a nice cafe in Beddgelert for a post-swim treat.
Aber Falls Plunge Pool
A popular spot for a quick dip at the base of the spectacular Aber Falls. The plunge pool is small and shallow, but the waterfall is stunning. Be careful of slippery rocks and strong currents.
Best for: Those seeking a refreshing dip after a walk, waterfall enthusiasts
Aber Falls car park (LL33 0LP). Charge applies.
Get directions to Aber Falls Car ParkInsider tip: The pool can get crowded on sunny days. Visit early or late to avoid the crowds. Take a towel and change of clothes as you'll get wet from the spray.
Llyn Crafnant
A remote and peaceful lake in the Gwydir Forest. Llyn Crafnant offers a tranquil swim with stunning views of the surrounding hills. It's a longer drive to reach, but well worth the effort for a secluded swim.
Best for: Experienced wild swimmers, those seeking solitude and tranquility
Small car park at the northern end of the lake (LL26 0LP).
Get directions to Llyn Crafnant Car ParkInsider tip: Bring a picnic and enjoy the peace and quiet after your swim. There are some lovely walking trails around the lake too.
Llyn Padarn
A large lake next to Llanberis, popular with watersports enthusiasts. Llyn Padarn is a good option for a longer swim, with plenty of space to explore. The views of Snowdon are fantastic.
Best for: Open water swimmers, triathletes, those seeking a longer swim with good facilities
Numerous car parks in Llanberis (LL55 4EL). Charges apply.
Get directions to Llanberis Lake RailwayInsider tip: Swim from the far end of the lake for quieter waters. There's a good cafe near the lake for a post-swim coffee and cake.
Roman Bridge Pools
Located near Dolwyddelan, these pools offer a secluded swim in a stunning, historic setting. The pools are small and shallow, but the surrounding scenery is beautiful. Perfect for a short, refreshing dip.
Best for: Those seeking a peaceful swim, history buffs, families
Limited roadside parking near the Roman Bridge (LL25 0TL). Park responsibly.
Get directions to Roman Bridge DolwyddelanInsider tip: Explore the surrounding woodland after your swim. The area is rich in history and wildlife.
Need to Know
Weather
The weather in Snowdonia is notoriously unpredictable. Even in summer, conditions can change rapidly, with sunshine turning to rain and strong winds in a matter of minutes. Check the forecast before you go and be prepared for all eventualities. Wind chill is a significant factor, especially at higher altitudes.
Gear Checklist
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Local Gear Shops
Joe Brown's
Capel Curig, Betws-y-Coed LL24 0EE
An iconic mountaineering shop, Joe Brown's is a must-visit for any outdoor enthusiast. They offer a wide range of gear and expert advice.
Siop Pinnacle
Llanberis, Caernarfon LL55 4HA
A well-stocked gear shop in the heart of Llanberis, Siop Pinnacle is a great place to find everything you need for your Snowdonia adventures.
V12 Outdoor
High Street, Llanberis LL55 4HB
V12 Outdoor offers a great range of outdoor clothing and equipment, catering for climbers, walkers, and adventurers alike.
Cotswold Outdoor
Holyhead Road, Betws-y-Coed LL24 0AY
Part of a national chain, this Betws-y-Coed branch offers a solid selection of outdoor gear, including swimwear and watersports accessories.
Events & Races
Snowdonia Triathlon
July • race • £150
A challenging triathlon set in the heart of Snowdonia, including an open water swim in Llyn Padarn.
More info →Llyn y Fan Fach Swim
August • race • £35
Although not in Snowdonia proper, this nearby open water swim in the Brecon Beacons is popular and scenic.
Swim Snowdonia
September • race • £45
Open water swim races of varying distances in Llyn Mair, Maentwrog.
More info →Frequently Asked Questions
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