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Plunge into the crystal-clear waters of the Brecon Beacons – waterfalls, rivers, and secret pools await.

The Brecon Beacons National Park isn't just for hiking and biking, it's a wild swimming paradise. Forget crowded beaches, we're talking pristine waterfalls cascading into deep plunge pools, tranquil rivers winding through valleys, and secluded mountain lakes reflecting the sky. The raw, rugged landscape provides a stunning backdrop for some truly invigorating dips. Wild swimming in Brecon Beacons offers a unique connection with nature, a chance to escape the everyday and immerse yourself in the Welsh wilderness. It's best suited for those with a sense of adventure and a respect for the environment.

However, let's be honest, it's not always sunshine and rainbows. The water can be *cold*, even in summer (bring a wetsuit!). Some spots require a bit of a hike to reach, and access isn't always easy. The weather can change in a heartbeat, so preparation is key. But for those willing to embrace the challenges, the rewards are immense. Discovering your own secret swimming hole, feeling the rush of a waterfall on your skin, and the unparalleled peace of floating in a mountain lake - these are experiences you won't forget. Just remember, safety first. Check the weather, tell someone where you're going, and never swim alone. This region is the ultimate location for wild swimming brecon beacons, allowing you to explore the natural beauty of the Brecon Beacons from a totally new perspective.

The sheer variety of water bodies is amazing. From the famous Sgwd yr Eira plunge pool to the serene Llangorse Lake, there's a swim for every taste and ability. While Llangorse offers family friendly swims and watersports, some of the more remote mountain pools are better suited for experienced wild swimmers only.

May-September (wetsuit recommended)

Best Season

Easy to Expert

Difficulty

Free - £80 guided

Price Range

Best Spots for Wild Swimming in Brecon Beacons

8 spots ranked by our team. Each one researched, visited, and honestly reviewed.

8 spots on the map

1Sgwd yr Eira Plunge Pool 2Pont Melin-fach Pools 3Llangorse Lake 4River Usk (Brecon)5Blue Pool (Ystradfellte)6Henrhyd Falls Pool 7Talybont Reservoir 8Grwyne Fawr Reservoir

Sgwd yr Eira Plunge Pool

Easy

The most iconic Brecon Beacons swimming spot. You can actually walk behind this spectacular waterfall and then plunge into the refreshing pool below. Expect crowds, especially on weekends, but it's worth it for the experience. The water is cold, even in summer, so a wetsuit is highly recommended.

2-3 hours round trip5.6km↑150mFree (parking £5)May-September

Best for: First-timers, families, photographers

Gwaun Hepste car park (CF44 9JF). Can get very busy, arrive early or be prepared to walk further from alternative parking spots along the road.

Get directions to Gwaun Hepste Car Park

Insider tip: Go early (before 9am) or late (after 5pm) to avoid the worst of the crowds. The light is also best for photos at these times.

Pont Melin-fach Pools

Easy

A series of smaller, shallower pools along the Mellte River, perfect for a more relaxed swim. There are several small waterfalls and rock formations to explore. This spot is much less crowded than Sgwd yr Eira, making it ideal for a peaceful dip.

1-2 hoursnull↑nullFreeJune-August

Best for: Families with young children, those seeking a gentle swim

Small parking area near the bridge at Pont Melin-fach (SA11 5US).

Get directions to Pont Melin-fach Bridge

Insider tip: Bring a picnic and enjoy it by the river after your swim. The nearby village of Pontneddfechan has a couple of nice pubs for a post-swim pint.

Llangorse Lake

Easy

The largest natural lake in South Wales, offering calm waters perfect for swimming, kayaking, and paddleboarding. The views of the surrounding mountains are stunning. There's a multi-activity centre on the lake offering various watersports.

Variesnull↑nullFree (parking/activities extra)May-September

Best for: Families, watersports enthusiasts, those seeking a leisurely swim

Llangorse Multi Activity Centre car park (LD3 7TR) (fee applies).

Get directions to Llangorse Multi Activity Centre

Insider tip: Hire a kayak or paddleboard to explore the lake fully. Look out for the crannog (artificial island) which is believed to be the only one in Wales.

River Usk (Brecon)

Moderate

A gentle, meandering river that's ideal for a leisurely swim. The stretch near Brecon town is particularly pleasant, with grassy banks and easy access. Be aware of the current, especially after heavy rain.

1-2 hoursnull↑nullFree (parking fees)June-August

Best for: Experienced river swimmers, those seeking a longer swim

Various car parks in Brecon town (LD3 7LA).

Get directions to Brecon Promenade

Insider tip: Swim upstream first, then float back down with the current. Stop for a picnic on the riverbank afterwards.

Blue Pool (Ystradfellte)

Moderate

A small, deep pool fed by a waterfall, known for its striking blue color. The water is very cold and the pool is quite small, but it's a beautiful spot for a quick dip. Requires a short walk from the parking area.

1-2 hoursnull↑nullFree (parking fees)July-August (but still cold!)

Best for: Experienced wild swimmers, those seeking a short, invigorating swim

Cwm Porth car park (CF44 9JF) (fee applies).

Get directions to Cwm Porth Car Park

Insider tip: Combine your visit with a walk to the nearby caves at Porth yr Ogof. The Blue Pool can be muddy after heavy rain, affecting the colour.

Henrhyd Falls Pool

Challenging

The tallest waterfall in South Wales, with a plunge pool at its base. The pool is deep and cold, but the setting is spectacular. You can walk behind the waterfall, but be prepared to get wet! Access is via a steep path.

2-3 hoursnull↑nullFree (parking fees)May-September

Best for: Experienced wild swimmers, adventurous types

National Trust car park at Henrhyd Falls (SA9 1GL) (fee applies).

Get directions to Henrhyd Falls Car Park

Insider tip: Check the waterfall flow before you go – it can be very powerful after heavy rain, making swimming dangerous.

Talybont Reservoir

Moderate

A large reservoir surrounded by forests and mountains. There are several access points for swimming, including a small beach area. The water is generally clean and calm, making it a good option for a longer swim.

Variesnull↑nullFree (parking fees)June-September

Best for: Experienced open water swimmers, those seeking a longer swim

Various car parks around the reservoir (LD3 7YS).

Get directions to Talybont Reservoir Dam

Insider tip: Explore the eastern side of the reservoir, where you'll find quieter swimming spots and beautiful woodland walks.

Grwyne Fawr Reservoir

Challenging

A more remote and peaceful reservoir tucked away in the Black Mountains. The water is clear and cold, and the surrounding scenery is stunning. It requires a bit of a drive along narrow roads to reach, but it's worth it for the tranquility.

2-3 hoursnull↑nullFreeJuly-August

Best for: Experienced wild swimmers, those seeking solitude and a remote location

Small parking area near the dam (NP7 7NN).

Get directions to Grwyne Fawr Reservoir Dam

Insider tip: Bring a map and compass (or a fully charged phone with GPS), as the area can be difficult to navigate. The views from the top of the dam are incredible.

Need to Know

Weather

The Brecon Beacons weather can be unpredictable. Sunshine can quickly turn into rain and fog, especially at higher elevations. Check the forecast before you go and be prepared for all conditions. Water temperatures are generally cold, even in summer, so a wetsuit is highly recommended.

Met Office →Mountain Weather Information Service →

Gear Checklist

Wetsuit (essential for most swims)

Towel (preferably a quick-drying microfibre towel)

Swim cap (helps retain heat and improve visibility)

Goggles (to protect your eyes and improve visibility)

Neoprene gloves and socks (for extra warmth)

Dry robe or changing robe (for changing outdoors)

Waterproof bag (to keep your belongings dry)

First-aid kit (including blister plasters and antiseptic wipes)

+2 more items

Local Gear Shops

Brecon Adventure

11 Lion St, Brecon LD3 7HY

Offers a wide range of outdoor gear, including wetsuits, swimwear, and accessories. They also offer gear hire for various activities.

Website 01874 622058

Mountain Warehouse

Unit 6, Cambrian Ctr, Brecon LD3 7HW

A large outdoor retailer selling a wide range of clothing and equipment at affordable prices.

Website 01874 611115

Trespass

Unit 11, Cambrian Centre, Brecon LD3 7HW

Offers a good selection of outdoor clothing and equipment, including wetsuits and swimwear.

Website 01874 625862

Events & Races

Llangorse Lake Open Water Swim

July • race • £40

An open water swimming race held annually at Llangorse Lake, offering various distances.

More info →

Brecon Beacons Ultra

July • race • £95

A running event that may incorporate some river crossings.

More info →

Frequently Asked Questions

May to September are generally the best months, but even then, the water can be cold! A wetsuit is recommended. July and August tend to have the warmest water temperatures, but also the biggest crowds.

Wild swimming always carries some risk, but by taking precautions, you can minimize the danger. Never swim alone, check the water conditions, wear appropriate gear, and tell someone where you're going.

While not essential, a wetsuit is highly recommended, especially for longer swims or swimming in waterfalls. The water temperatures are usually quite cold, even in summer.

Yes, Adventure Britain and Black Mountain Adventure offer guided wild swimming tours in the Brecon Beacons. These tours are a great option for beginners or those who want to explore the area with an experienced guide.

There are no specific restrictions on where you can swim in the Brecon Beacons, but it's important to respect the environment and avoid swimming in areas that are designated as protected habitats. Also, be mindful of private land and avoid trespassing.

Yes, dogs are generally allowed in most wild swimming spots in the Brecon Beacons, but be responsible and keep them under control. Clean up after your dog and be mindful of other swimmers and wildlife.

You can find wetsuit rentals at Brecon Adventure on Lion Street. There might be other local shops so ring ahead to avoid disapointment.

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