Pool to Open Water Swimming NZ: How to Make the Switch
If you've spent winter and spring building fitness in the pool, you're better prepared for open water than you might think. But the lake or ocean is a different environment, and the first few swims are often more about adjusting than performing.
Here's how to bring your pool fitness outdoors, and the gear that makes it easier.
What Changes When You Leave the Pool?
In the pool, the lane lines keep you straight, the wall gives you a rest every 25 or 50 metres, and the water is flat and predictable. Open water takes all of that away.
- No black line. You'll need to sight (lift your eyes to spot a landmark) to stay on course.
- No walls. Continuous swimming feels different, even over shorter distances.
- Variable conditions. Chop, current, swell and glare all affect how a swim feels.
- Colder water. Even in summer, NZ lakes and sea water can be a shock after a heated pool.
None of this is a reason to hold back. It just means your first sessions should be about getting comfortable rather than clocking distance.
Start Short, Stay Close
For your first few swims, pick a calm, sheltered spot, ideally somewhere with a defined swim area or a beach you can exit easily. Keep the distance well below what you'd swim in the pool and focus on settling your breathing.
A few simple habits make a big difference:
Always swim with someone, or at a supervised location with people. Never swim open water alone with letting someone know where you are.
Let your body acclimatise. Wade in, splash your face, and take a minute before you start swimming.
Build time before distance. Ten to fifteen minutes of relaxed swimming is a good first target.
Practise Sighting in the Pool First
You can start working on this before you ever leave the pool. Every few strokes, lift your eyes just enough to spot a fixed point at the end of the lane, then rotate back into your normal breathing. In open water, you'll do the same thing with a tree, a building or a buoy.
Keep the lift small. Raising your head too high drops your hips and costs you energy, so aim to just clear the surface with your eyes.
Choosing the Right Goggles for Open Water
Goggles matter more outdoors than they do in the pool. Glare off the water can be intense, and a leaking or fogging pair is a bigger problem when you can't just stop at the wall.
- Lens tint: Mirrored or tinted lenses cut glare in bright conditions, while clear lenses suit overcast days and early mornings. Polarised lenses go a step further, filtering the surface glare that makes sighting difficult. The TYR Special Ops 2.0 Polarised is a popular choice for open water swimmers and triathletes for exactly this reason.
- Field of vision: Wider lenses make it easier to spot buoys and other swimmers without extra head movement.
- Fit: A secure seal matters even more when you're swimming continuously, and it's worth testing a new pair in the pool before you rely on it outdoors.
Not sure which pair suits you? Browse the full TYR goggle range to compare fits and lens options.
What to Wear: Choosing the Right Suit
Your open water suit has a different job from your pool suit. You'll be swimming continuously, often for longer than a pool set, so durability and comfort matter more than a race-day fit.
- Pick a training suit. TYR's Durafast Elite range is built for high-volume swimming. It's 100% chlorine-proof and colorfast, with 300+ hours of performance, so it holds its shape and colour through sun, sand and repeated use. Shop training swimwear.
- Check for chafing points. Seams and straps that feel fine over 50 metres can rub over 30 minutes. Try your suit on a longer pool swim first.
- Think about water temperature. In cooler NZ lakes and sea water, many swimmers add a wetsuit, which also adds buoyancy. Try it before your first outdoor swim so you know how it feels.
More TYR Gear Worth Packing
Swim cap: a bright silicone cap makes you easier to spot, and it's more durable than latex for regular use. Shop swim caps.
Tow float: adds visibility and gives you something to hold if you need a rest. Shop flotation accessories.
A bag that breathes: the TYR Mesh Mummy Bag lets wet gear dry on the way home from a lake or ocean swim, and the Mesh Equipment Bag suits sessions where you only need the essentials. Shop bags.
Frequently Asked Questions
What are hand paddles used for?
Hand paddles make your hand bigger so each stroke moves more water. They build strength through the lats, shoulders, triceps and chest, and they give you feedback on your technique.
Do I need mirrored goggles for outdoor swimming?
Not essential, but recommended. Mirrored lenses reduce glare from sunlight on water, which reduces eye fatigue over longer swims. For regular open water or triathlon use, the difference is noticeable.
What size paddles should I choose?
Start with a size only slightly bigger than your hand. Large paddles too early are a common cause of sore shoulders
Do I need a pull buoy as well?
Not necessarily, but they pair well. A pull buoy holds your legs up so you can focus on your upper body, while swimming paddles without one helps you work on stroke and kick timing.
What's the best way to dry swim gear after a session?
Let it breathe. A mesh bag like the TYR Mesh Mummy Bag lets wet togs and towels dry on the way home instead of sitting damp in a sealed bag.
What goggle is best for swimming outdoors in NZ summer?
The Special Ops 2.0 Polarised handles bright NZ sun conditions best. For a more budget-friendly outdoor option, any of the mirrored variants — Stealth-X Mirrored, Tracer-X RZR Mirrored, or Socket Rocket 2.0 Mirrored — cut glare effectively for pool and beach use.
How often should I replace my training suit?
When it goes baggy, thin or faded. Daily chlorine wears training suits down, so spring is a good time to check last season's pair.
