From crystal-clear coastlines to picturesque lakes and natural pools, we’ve compiled a selection of 10 of the best must-see swimming venues worldwide, curated by the former competitive swimmer and wild swimming enthusiast, Lydia Ferrari Kehoe. 

Lake Bled, Slovenia

Water Temperature Range = 3°C - 23°C

Nestled in the heart of the Slovenian Alps is Lake Bled, one of Europe’s most popular open water swimming destinations. The surrounding mountains and deep-blue lake make for scenery that is fit for a painting, and the challenge of swimming the length of the lake (2km / 1.2miles) is one that many keen swimmers travel to Bled to undertake.

For those keen to explore the local attractions, there is a short 300 metre swim from the shore to Bled Island, located in the centre of the lake, which boasts a 17th century church and monastery. As a popular destination for guided swimming trips, you’ll likely stumble across like-minded adventurers during your stay.

Falasarna Beach, Crete, Greece

Water Temperature Range = 20°C - 25°C

There’s no doubt that Greece and its surrounding islands have a lot to offer when it comes to open water swimming, and Crete’s Falasarna beach has to be a highlight. The clear turquoise waters showcase the marine life beneath the surface perfectly, and the warm climate offers a pleasant temperature all-year round.

The area surrounding Limpet Island is a particular highlight and features a WWII shipwreck that is a favourite attraction of the local diving schools. Those looking to explore the open seas can complete the ‘Falasarna Triangle’ swim, a 2.1 mile / 3.7 kilometer swim that takes you out to Limpet Island to the northern corner of the bay and back to the shore.

Rottnest Island, Western Australia

Water Temperature Range = 18°C - 23°C

Home to the annual Rottnest Channel swim, one of Australia’s most iconic open water races, the turquoise and navy marbled waters of Rottnest are something of a marvel. This gem, affectionately known as ‘Rotto’ to locals, is located just 18 kilometers off the coast of Perth and has it all.

The shallow, clear waters and white sandy beaches (in particular The Basin and Longreach Bay) make it the perfect spot for a casual dip or snorkel. Divers can also explore the historic wreck of Shark at Henrietta Rocks, located just 50 metres offshore. If you’re looking for a competitive challenge, then the aforementioned Channel swim sees participants swim 19.7km from the mainland to Rottnest (qualification is required).

Lake Windermere, Lake District, United Kingdom

Water Temperature Range = 12°C - 23°C

Situated in North West England’s Lake District National Park, Lake Windermere is the country’s largest lake. Spanning 10.5 miles / 18 kilometers in length, it’s easy to see why it is home to some of the nation’s largest and toughest open water swimming races.

The surrounding landscape is some of the most impressive you’ll find in the UK, with the neighbouring towns and villages being incredibly popular for domestic getaways. If you’re looking for a swimming venue where you can really sink your teeth into some big mileage, all while enjoying the impressive and vast scenery, Windermere is worth a visit.

Porto Moniz, Madeira, Portugal

Water Temperature Range = 17°C - 25°C

The pools of Porto Moniz were formed over thousands of years by the lava flow of the now extinct volcanoes on the island, and have resulted in some of the most spectacular natural pools worldwide.

Located on the north west tip of Madeira, the pools sit at the foot of the rugged coastline, meaning swimmers can enjoy a panoramic view of the Atlantic Ocean, coastline and rocks while they paddle. The pools are filled naturally by the ocean’s high tide and offer the perfect setting for those who favour seawater swimming above fresh.

Carlisle Bay, Barbados

Water Temperature Range = 26°C - 30°C

This crescent-shaped bay is a protected Marine Park and lies in the heart of a UNESCO World Heritage Site. One of the country’s true gems, the bright turquoise waters are so clear they’re more liken to a swimming pool than the sea, with the crisp white sand making this an idyllic setting for a swim.

These calm waters are also home to the Barbados Open Water Swimming Festival; a five-day event which has attracted Olympians, World Champions, Masters World Champions and more since its inaugural year in 2013. This is the perfect destination for those who prefer clear waters and more tropical climes.

Fjærlandsfjorden, Norway

Water Temperature Range = 4°C - 16°C

Norway boasts many open water swimming paradises, and the fjord of Fjærlandsfjorden is one such wonder. Enveloped by glacial mountains, the village of Fjaerland is a popular spot to test the cool waters of this 25 km long fjord.

Hailed for its postcard-esque views, this quintessentially Nordic scene offers swimmers an invigorating dip in icy, cool waters all-year round. This area also boasts a floating sauna which acts as the perfect body-warmer post plunge. Due to the low water temperatures, this area is favoured for quick dips rather than longer swims, so ensure you prepare correctly before braving the cold.

Keem Bay, Achill Island, Ireland

Water Temperature Range = 8°C - 16°C

Keem Bay is a standout in what is a country filled with beautiful open water swimming locations. Set in the West Coast in County Mayo, it was previously named the number one wild swimming spot in the UK and Ireland. Its setting is reminiscent of an amphitheatre, with the pale beach strand positioned at the foot of the Benmore Cliffs.

The turquoise blue of the shallow water blends seamlessly into the rich teal of the deep, and the secluded nature of the beach makes it ever popular with tourists and locals alike. The water within the 4 km stretch of beach is calm, making it perfect for a swim, snorkel or even paddle-board. The cooler climate and surrounding cliffs means that temperatures are typically quite bracing all year-round.

Lake Tahoe, USA

Water Temperature Range = 4°C - 22°C

Lake Tahoe needs no introduction. A mecca for exploration, hiking, mountain biking and more, this infamous destination has cemented itself as one of the most impressive freshwater swimming locations in the world.

In recent years, the green-blue waters of the USA’s largest alpine lake have become synonymous with marathon swimming in particular, boasting three sanctioned courses, ranging from 10 to 21 miles, and multiple organised events per year. The pure, cool waters are surrounded by the Sierra Nevada mountains, making this venue a true jewel in the crown of swimming on the West Coast.

Landmannalaugar, Iceland

Water Temperature Range = 36°C - 40°C

Iceland is a magnet for those who love the water, and it’s easy to see why. The landscape is peppered with hot pools, thermal baths and sea baths, including the notorious Blue Lagoon.

Landmannalaugar Geothermal Pool, located in the Highlands, is part of the Fjallabak Nature Reserve and offers a magnificent, unspoiled view of the surrounding area. It is considered one of, if not the best natural pool in Iceland, and is favoured by hikers exploring the Rhyolite Mountains who are looking for a post-walk dip to warm up. Landmannalaugar is one of dozens of swimming spots worth visiting in the area so be sure to plan a route that allows you to visit more than one.

Health & Safety - Be Aware, Be Prepared

Open water swimming is a unique and fulfilling way to explore new areas, but does not come without risk. Safety is paramount, and swimming in natural bodies of water requires you to be extremely aware of your environment and the elements. Be mindful of weather conditions, water temperatures, marine life, currents and potential hazards such as rips or sudden changes in depth.

Ensure you use the correct equipment, such as wearing brightly coloured hats and floatation devices, and wetsuits in water below 22°C. Always adhere to local guidelines and swim in groups or with a companion where possible.