What Is Wild Swimming?
Wild swimming simply means swimming in natural, open bodies of water — rivers, lakes, tarns, sea coves, and waterfalls — outside of designated swimming pools or managed beach areas. It's one of the oldest outdoor activities, and it's having a remarkable revival as people seek more meaningful connections with the natural world.
The appeal is hard to explain to someone who hasn't tried it. There's a particular combination of cold shock, total immersion, and physical effort that produces an almost meditative calm. And finding a hidden lake or secret swimming hole that isn't on any official map adds an element of discovery that's genuinely addictive.
How to Find Hidden Swimming Spots
The best wild swimming locations rarely appear on tourist boards. Here's how experienced swimmers find them:
Use Topographic Maps
OS maps (in the UK), IGN maps (in France), and equivalent topographic maps in other countries show every body of water in detail. Look for small unnamed lakes, river bends, and coastal inlets. The smaller and less labelled, the better — these are the spots that stay secret.
Follow Streams Uphill
Rivers and streams flowing down from moorland or mountain often pass through natural pools and plunge pools where waterfalls have carved out basins. Following a stream uphill on foot frequently leads to spectacular hidden swimming spots.
Ask Locals
This sounds obvious, but it works. Ask at local outdoor shops, youth hostels, or walking clubs. Locals swim in places that never get photographed or shared online — and many are happy to point you in the right direction.
Wild Swimming Communities
Online communities of wild swimmers share spots, water quality notes, and access information. The collective knowledge is vast. Search for regional wild swimming groups on forums and social media to get started.
Safety: What You Need to Know Before You Swim
Wild swimming is safe when approached with common sense. Key considerations:
- Water temperature: Cold water shock is real and can be dangerous. Enter slowly, control your breathing, and never dive into water of unknown temperature or depth.
- Currents and flow: Rivers can have deceptively strong currents. Avoid swimming in or directly below fast-moving water.
- Depth and obstacles: Always check depth before jumping or diving. Submerged rocks and branches are common.
- Water quality: Avoid swimming near agricultural runoff, after heavy rainfall (which can flush pollutants into waterways), or near sewage outlets. Check local water quality reports where available.
- Blue-green algae: In warm weather, some lakes develop toxic algal blooms. If the water looks green or has visible surface scum, don't swim.
- Never swim alone in remote locations — always bring at least one other person.
What to Bring
- A brightly coloured swim tow float — makes you visible and provides a flotation aid
- Neoprene gloves and socks for colder water (extending your season significantly)
- A good changing robe or dry bag with warm layers for after
- Water shoes for rocky or weedy entries
- A small dry bag for your phone and keys
The Leave No Trace Principle
Hidden swimming spots stay hidden — and pristine — because people treat them with care. Always follow these principles:
- Take all litter with you (including others' litter if you see it)
- Use eco-friendly sunscreen, or apply it well before swimming so it doesn't wash off in the water
- Avoid disturbing wildlife — nesting birds, fish habitats, and bankside vegetation
- Be thoughtful about sharing exact locations online — some spots get damaged by sudden popularity
The Best Seasons for Wild Swimming
While committed wild swimmers swim year-round, most beginners find late spring through early autumn most accessible. June and September offer a sweet spot — water that's warmed from summer sun, but crowds at a minimum. The most experienced swimmers report that winter dips, while intense, produce an unmatched euphoric afterglow.
Wild swimming will change how you experience landscape. Once you've swum in a mountain tarn at golden hour, or floated in a secret river pool with trees arching overhead, the world of outdoor experience opens up in a way it's hard to close again.