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North Wales

Gwynedd

Top 20 Lakes in Gwynedd

Best lakes in Gwynedd are found within this county in North Wales, known for its natural landscapes. Many of these "llynnoedd" are nestled within Snowdonia National Park. The region features a collection of natural and glacial lakes, offering diverse outdoor activities. These bodies of water are often surrounded by mountains and forests, contributing to the area's scenic appeal.

Best lakes in Gwynedd

  • The most popular lakes is Cwm Idwal, a lake known for its ice-sculpted landscape and crystal-clear waters.…

Last updated: April 23, 2026

Y Garn Summit

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Y Garn of the Glyderau is a mountain of two halves. On one side it drops in continuous green slopes to the pass of Llanberis. On its other it’s a …

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Llanberis Village and Llyn Padarn

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Llanberis is synonymous with Yr Wyddfa (Snowdon). It's a popular starting point for some of the easier ways to the roof of Wales. Whether it’s via the Llanberis Path or …

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Cwm Idwal

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A beautiful lake with stunning views to Tryfan and Pen Yr Ole Wen. There is a circular walk from the visitors centre which takes you around the lake or you …

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Llyn Llydaw (Brittany Lake)

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Llyn Llydaw is a beautiful natural lake nestled amid dramatic mountain peaks. The beach at the far end is the perfect place to cool off before the final descent to Pen-y-Pass.

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Llyn Cau

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Llyn Cau has an ambience all of its own. This is a beautiful high mountain pool watched over by the frowning cliffs of Craig Cwm Amarch and Penygadair, Cadair Idris' …

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Llyn Dinas

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Llyn Dinas is a picturesque 24-hectare glacial lake in Eryri (Snowdonia) National Park in North Wales, near Beddgelert in the Nant Gwynant valley. It is a popular spot for scenic …

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Llyn Cynwch

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Llyn Cynwch acts as both a 'prequel' and 'sequel' to the Precipice Walk, one of the most famous and popular walks in the area with breathtaking views. You'll get a …

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Cregennan Lakes

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These twin lakes are particularly beautiful and lie just north of Cadair Idris. Both are owned by the National Trust and are free to visit. With mountains rising around them …

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Llyn Tegid (Lake Bala)

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At 6km long and 0.8km wide Llyn Tegid is the largest natural lake in Wales. The glacial lake formed in the fault line between Bala and Tal-y-Llyn towards the end …

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Llangower Station and Bala Lake

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Another lovely welsh road, mainly quiet with a perfect view of Lake Bala. Bala is Wale's largest natural lake with it's deep and clear waters. The lake is popular for …

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Dominiek Van Dooren
May 7, 2026, Llyn Dinas

Llyn Dinas is a picturesque 24-hectare glacial lake in Eryri (Snowdonia) National Park in North Wales, near Beddgelert in the Nant Gwynant valley. It is a popular spot for scenic walks, wild trout fishing, paddleboarding, and swimming. The lake is relatively shallow (maximum 10 metres) and lies on the lower slopes near the Watkin Path to the summit of Snowdon.

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Clive G
October 27, 2025, Y Garn Summit

Y Garn is a fine hill, usually climbed from Ogwen Valley by it's West ridge, or as part of the walk along the Glyders range between Elidir Fawr and the Glyders themselves. There is however another way up, the East Ridge, which is a Grade 2 scramble and starts from Llyn Idwal.

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Annja
August 31, 2025, Cregennan Lakes

First, a somewhat adventurous ride on the single track to the parking lot, which costs £5. The easy loop around the lake is very beautiful and relaxing – the sheep roam freely, but they keep their distance. Dogs must be on a leash, of course, but that's not a problem. Enjoy it – and if you're up for more, go for a longer loop. There are a few tables and benches above the parking lot for your picnic. You won't find any litter baskets, so you'll have to take them with you – which is perfectly fine, as it's a nature reserve. Highly recommended.

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Amazing place, feels other worldly

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Llyn Idwal is a lake (approximately 800 by 300 metres, or 28 hectares) in Cwm Idwal in the Glyderau Mountains of Snowdonia. On the north-western edge of Llyn Idwal is a small pebble beach, which is occasionally used by visitors for recreation. Swimming is not permitted as it is in a nature reserve.

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Piri
May 25, 2025, Llyn Dinas

Quiet, peaceful,tranquil spot for a picnic

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Great few hours spent. Fairly easy hike.

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Nej
September 2, 2024, Llyn Dinas

Situated just to the north of Beddgelert, and named after the nearby hill fort of Dinas Emrys, Llyn Dinas is a beautiful, peaceful lake perfect for a walk or even a swim.

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Frequently Asked Questions

What are some of the most popular lakes in Gwynedd?

Among the most popular lakes in Gwynedd are Cwm Idwal, known for its ice-sculpted landscape and crystal-clear waters, and Llyn Llydaw, famous for Snowdon's reflection on its surface. Llyn Dinas is also a favorite for walks, picnics, and wild swimming.

Which lakes are best for watersports like paddleboarding or kayaking?

Several lakes in Gwynedd are excellent for watersports. Llyn Tegid (Bala Lake) is the largest natural lake in Wales and a popular spot for yachting and paddleboarding. Llyn Padarn near Llanberis also offers great opportunities for paddleboarding, kayaking, and open water swimming. Further along, Llyn Gwynant is popular with kayakers and paddleboarders.

Are there family-friendly lakes in Gwynedd with easy access?

Yes, many lakes are suitable for families. Cwm Idwal offers an easy circular walk from the visitor's centre. Llanberis Village and Llyn Padarn is very accessible with amenities nearby. Llyn Dinas and Llyn Gwynant are also considered ideal for a day out with family and friends, offering easy walks and picnic spots.

What kind of hiking trails can I find around Gwynedd's lakes?

Gwynedd's lakes offer a wide range of hiking trails. You can find easy walks, moderate loops, and challenging ascents. For example, the area around Cwm Idwal has an easy circular walk. More challenging routes, like the Miners' Track, lead past Llyn Llydaw and Llyn Glaslyn towards Snowdon's summit. You can explore various options, including waterfall hikes, or find routes for road cycling and gravel biking in the region.

Are there any historical sites or legends associated with Gwynedd's lakes?

Yes, many lakes are steeped in history and legend. Llyn Tegid (Bala Lake) is connected to Cambrian legends, including tales of Tegid Foel. Llyn Padarn is overlooked by Dolbadarn Castle. Llyn Glaslyn has Arthurian associations, with legends claiming King Arthur's sword Excalibur was thrown into its waters. The name of Llyn Idwal refers to an old Welsh legend about Prince Idwal.

What unique natural features can I see around Gwynedd's lakes?

Gwynedd's lakes are set amidst stunning natural beauty. Cwm Idwal is known for its ice-sculpted landscape and unique rock formations, being part of a nature reserve. Llyn Padarn features the ancient Sessile Oak woodland of Coed Dinorwig, a designated Site of Special Scientific Interest, and the famous 'Lonely Tree'. Llyn Llydaw and Llyn Glaslyn are nestled among dramatic mountain peaks, offering spectacular reflections of Snowdon.

Is wild swimming permitted in Gwynedd's lakes?

Wild swimming is popular in several of Gwynedd's lakes. Llyn Tegid (Bala Lake), Llyn Padarn, Llyn Dinas, and Llyn Gwynant are all popular spots for wild swimming. However, swimming is not permitted in Llyn Idwal due to its status as a nature reserve.

Are there any lakes in Gwynedd that are wheelchair accessible?

Yes, Cregennan Lakes is listed as wheelchair accessible, offering beautiful views and facilities for visitors with limited mobility.

What is the best time of year to visit Gwynedd's lakes?

The best time to visit Gwynedd's lakes generally depends on your preferred activities. Spring and summer (April to September) offer warmer weather, ideal for watersports, hiking, and enjoying the wildflowers around lakes like Llyn Gwynant. Autumn brings stunning foliage, while winter can offer dramatic, snow-capped landscapes for experienced hikers, though some facilities may have reduced hours.

What can I expect to see around Llyn Idwal?

Llyn Idwal is located in Cwm Idwal in the Glyderau Mountains and is renowned for its ice-sculpted landscape, crystal-clear waters, and unique rock formations. It's part of a nature reserve, making it a great spot for an easy hike and enjoying the natural beauty. The area is also world-famous for its rare and fragile plant life. You'll find stunning views to Tryfan and Pen Yr Ole Wen.

Where can I find quiet or hidden lakes in Gwynedd?

While many lakes are popular, you can find quieter spots. Llyn Glaslyn, though smaller and higher than Llyn Llydaw, offers a more atmospheric and solitary experience, especially for adventurous wild swimmers. Llyn Cau, nestled below Cadair Idris, also provides a sense of wild grandeur away from the main tourist trails.

Are there opportunities for cycling near Gwynedd's lakes?

Absolutely. Gwynedd offers excellent cycling opportunities around its lakes. You can find road cycling routes that loop around lakes like Llyn Tegid (Bala Lake), and gravel biking trails near Cregennan Lakes and the Mawddach Trail. The Llanberis Lake Railway also runs around Llyn Padarn, offering scenic views for cyclists.

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Find the best lakes in Gwynedd per region:

Bala LakeFfestiniogY FelinheliClynnogBangorAberDolgellauBethesdaBontnewyddBrithdir And LlanfachrethDyffryn ArdudwyLlandderfelLlanelltydPorthmadogAberdoveyCorrisTywynLlangelyninDolbenmaenLlanllechidArthogLlanddeiniolenHarlechLlanbedrBalaCaernarfonLlanberisLlandygaiLlanllyfniLlanrugBeddgelertBryn-CrugLlanfairLlanfihangel-Y-PennantLlanfrothenLlanwndaMawddwyPennalTrawsfynyddLlanuwchllynLlanycilLlandwrogGanllwydBetws GarmonPentirBarmouthWaunfawrLlanegrynTalsarnauMaentwrogPenrhyndeudraethSnowdoniaLlangywer

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Still not found your perfect lake in Gwynedd? Check out the guides of these regions to see even more beautiful places.

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