Best lakes around Llanystumdwy offer diverse natural features and historical significance. This charming village in Gwynedd is surrounded by picturesque lakes, providing opportunities for scenic views and outdoor activities. The area features tranquil valleys, mountain backdrops, and waters with artistic and historical connections. Visitors can explore both natural lakes and significant reservoirs, each with unique characteristics.
Last updated: October 3, 2026
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During a walk along Llyn Bach you can see a heron, geese, ducks and swans. There are a few picnic tables/benches near the parking lot next to Wilko's. There are also a number of benches spread across the lake where you can sit and enjoy the peace and quiet and the 'postcard view'.
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Take a moment to appreciate this amazing view of the mountains. Sometimes the mountains reflect in the water here. If you are lucky you can also wave at the steam train as it passes by.
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A great view of Snowdon sitting over the Nantlle Valley
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Llyn Nantlle Uchaf is a gorgeous little lake in the tranquil Nantlle Valley. It used to be one of two lakes here, however the lower lake was drained to protect the slate quarries. It was the subject of a famous 18th-century painting, 'View of Snowdon from Llyn Nantlle' by Richard Wilson, and is also the main setting of the fourth branch of the Mabinogion, Britain's earliest prose stories.
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The lakes in this area offer diverse natural beauty. For instance, Llyn Nantlle Uchaf is known for its tranquil setting and stunning reflections of Snowdon (Yr Wyddfa). You can also find picturesque mountain views, sometimes with steam trains passing by, as highlighted at View of Snowdonia Mountains. Llyn Cwm Ystradllyn, nestled in Snowdonia National Park, boasts gin-clear waters fed by mountain streams and is surrounded by rugged upland scenery and varied wildlife. Llyn Trawsfynydd is a large reservoir with diverse waterfowl and occasional osprey sightings.
Yes, several lakes offer family-friendly experiences. Llyn Bach provides a pleasant walk where you can spot herons, geese, ducks, and swans, with picnic tables and benches available. The viewpoints around Llyn Nantlle Uchaf are also considered family-friendly. Llyn Trawsfynydd features walking and cycling paths suitable for families, offering panoramic views of the Rhinogs and Cadair Idris.
The lakes are rich in history and culture. Llyn Nantlle Uchaf was famously depicted in Richard Wilson's 18th-century painting 'View of Snowdon from Llyn Nantlle' and is a main setting for the Mabinogion, Britain's earliest prose stories. Llyn Cwm Ystradllyn has nearby ruins of the Ynysypandy slate mill, a striking derelict building. Llyn Trawsfynydd is a large artificial reservoir with a history tied to hydro-electric power and a former nuclear power station. Llyn Celyn is historically significant due to the controversial flooding of the Welsh-speaking village of Capel Celyn during its creation.
Yes, fishing is a popular activity at several lakes. Llyn Cwm Ystradllyn is known for excellent fly fishing, home to wild brown trout and regularly stocked rainbow trout. Llyn Trawsfynydd is also a haven for fishing enthusiasts, with natural wild brown trout, regularly stocked rainbow trout, perch, rudd, and pike. Strict rules apply at Llyn Cwm Ystradllyn due to its role as a water supply, including no maggot fishing or ground baiting.
The area around Llanystumdwy offers various outdoor activities. You can find numerous hiking trails, such as the 'Criccieth Castle – Dwyfor Estuary Boardwalk loop' or the 'David Lloyd George's Grave loop'. For road cycling, routes like 'A sea view loop of the eastern Llŷn Peninsula from Criccieth' are available. There are also running trails, including the 'Secluded Beach Cove – Pen-ychain Headland loop'. You can explore more options on the Hikes from bus stations around Llanystumdwy, Road Cycling Routes around Llanystumdwy, and Running Trails around Llanystumdwy guide pages.
Yes, Llyn Celyn plays a crucial role in providing facilities for white-water sports. Water released from the reservoir into the River Tryweryn feeds the Canolfan Tryweryn National White-water Centre, offering international-level facilities for white-water canoeing and rafting, even during dry spells.
For a serene atmosphere, Llyn Nantlle Uchaf in the tranquil Nantlle Valley is an excellent choice. Llyn Cwm Ystradllyn also offers a peaceful setting amidst rugged upland scenery, often described as a 'green oasis among savage hills'.
The best time to visit largely depends on your preferred activities. Spring and summer offer pleasant weather for walking, cycling, and enjoying the natural beauty, with wildlife being more active. Autumn provides stunning foliage, especially around lakes with surrounding woodlands. While winter can be beautiful, some trails might be more challenging due to weather conditions.
Absolutely. The View of Snowdon (Yr Wyddfa) Across Llyn Nantlle Uchaf is renowned for its iconic vista. Another excellent spot is the View of Snowdonia Mountains, where you might see the mountains reflected in the water. Llyn Trawsfynydd also offers panoramic views of the Rhinogs and Cadair Idris from its walking and cycling paths.
Visitors frequently appreciate the stunning natural beauty and tranquility of the lakes. Many enjoy the chance to see mountains reflected in the water, spot diverse wildlife like herons and waterfowl, and experience the rich history and cultural significance of sites like Llyn Nantlle Uchaf. The opportunities for walking, cycling, and fishing are also highly valued.
Many of the walking paths and trails around the lakes are dog-friendly, allowing you to enjoy the scenery with your canine companion. For example, the paths around Llyn Trawsfynydd are suitable for walks. When visiting, always ensure dogs are kept under control, especially near livestock or wildlife, and adhere to any local signage regarding leads or restrictions.
While direct public transport to every lake might be limited, some areas are more accessible. For instance, you can find hiking routes that start from bus stations around Llanystumdwy, as detailed in the Hikes from bus stations around Llanystumdwy guide. It's advisable to check local bus schedules for specific routes to the vicinity of the lakes you plan to visit.


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