Winter Pool Training: Why Now Is the Best Time to Get Serious in the Water
No wind, no chop, no excuses. Here's why winter is the best time to get serious in the pool — and exactly what should be in your swim bag.
The days are getting shorter, the evenings are cooling down, and the open water season is winding up. For swimmers, triathletes, and water lovers across New Zealand, that means one thing: it's time to commit to the pool.
There's something satisfying about a winter pool block. No wind, no chop, no excuses — just you, the black line, and the opportunity to build a foundation that will pay off come summer. The swimmers who show up through the cold months are the ones who look untouchable in spring. The aerobic base, the technique, the feel for the water — it all compounds quietly through winter and arrives noisily when the season opens.
Here's why a structured pool block is worth your winter, and what you need in your bag to make every session count.
Why Winter Is the Right Time to Train in the Pool
Open water swimming is brilliant, but it's reactive — you're managing conditions, visibility, and temperature. The pool removes all of that and lets you focus on what actually makes you a better swimmer.
Technique is easier to work on in controlled conditions. Flat water, consistent lane lengths, and the ability to stop and reset make the pool the ideal environment for drill work, pull sets, and stroke refinement. Technique gains made in winter carry directly into your open water performance in summer.
You can build aerobic base without the variables. A properly structured winter pool block — consistent volume, progressive intensity, regular drill work — builds the kind of deep aerobic fitness that's hard to develop in open water. Triathletes in particular benefit from putting serious pool time in during the off-season.
It creates accountability. Showing up to a lane at 6am is a different commitment to "I'll get an ocean swim in this weekend." That consistency is what separates swimmers who improve year on year from those who plateau.
Who Should Do a Winter Pool Block
This isn't just for competitive squad swimmers. A winter pool block is valuable for:
- Triathletes maintaining swim fitness between race seasons
- Open water swimmers wanting to work on technique away from conditions
- Fitness swimmers who want a structured programme rather than casual laps
- Anyone returning to the water after time off — whether from winter, injury, or life getting in the way
- Junior swimmers who want to develop skills ahead of a summer season
If you've been out of the pool for a while, don't overcomplicate the return. Start with two or three sessions a week and build from there. Our pool rehab guide has practical advice if you're coming back from injury specifically.
What a Good Winter Pool Session Looks Like
A productive pool session isn't just grinding out laps. A balanced structure looks something like this:
Warm-up (400–600m): Easy mixed strokes, building into your main set pace. Use this to get your feel for the water back.
Drill set (200–400m): Targeted technique work — catch-up drill, fingertip drag, kickboard sets, or snorkel work to isolate your stroke.
Main set (1000–2000m): The meat of the session. Pull sets with a pull buoy and paddles, interval work, or threshold sets depending on your phase of training.
Cool-down (200m): Easy, focus on long strokes and relaxed breathing.
That's a solid 45–60 minute session. Two or three of these a week through winter and you'll arrive in spring a different swimmer.
What Should Be in Your Swim Bag
Showing up is only half the battle. The right gear means you can execute your session properly — no fumbling, no forgotten essentials, no wasted lane time.
A Training Swimsuit That Handles the Kilometres
If you're in the pool three times a week through winter, your suit is going to take a beating. You need something built for frequent chlorine exposure — a fashion suit will lose its shape within weeks of serious training. TYR's Durafast Elite range is designed specifically for high-volume training: the fabric holds its shape, the cut allows full range of motion, and it won't go baggy by week three.
Goggles That Actually Stay Put
A reliable goggle makes a bigger difference than most swimmers realise. If you're stopping every 200m to adjust a leaking or fogging pair, you're losing rhythm and focus. Look for a pair with a wide field of vision, a secure seal, and lenses suited to indoor lighting — a tinted or mirrored lens is for outdoor use; clear or low-light lenses are better for most NZ pool environments.
A Swim Cap
Protects your hair from chlorine and keeps it out of your face during drill work. Silicone caps are more durable and comfortable for regular use; latex caps are thinner and lighter if you prefer minimal feel.
Fins for Kick Sets and Drill Work
Short training fins add propulsion during drill sets, help you maintain speed while focusing on upper body mechanics, and build ankle flexibility over time. They're especially useful for swimmers who are working on their kick technique or coming back from a lower body injury.
A Pull Buoy for Upper Body Sets
The pull buoy is the workhorse of squad training. Float your legs, switch off your kick, and let your arms do everything. Pull sets build strength, improve your high-elbow catch, and give your legs a break during high-volume weeks.
Combine it with hand paddles and an ankle strap for a complete pulling set — this trio is a staple in every serious squad's winter programme.
Shop pull buoys and flotation →
A Front-Mount Snorkel
A front snorkel removes the breath entirely from your stroke so you can focus on body position, catch angle, and symmetry. It sounds like a small thing, but swimmers often discover their stroke has a significant imbalance they weren't aware of the first time they use one. A great tool for drill sets and warm-ups.
Shop snorkels and accessories →
A Bag That Keeps It All Together
All of this gear needs somewhere to live between sessions — ideally somewhere that lets wet kit drain and dry properly. TYR mesh bags are designed exactly for this: breathable mesh construction, enough space for fins, paddles, pull buoy, and everything else, and durable enough to handle the daily commute to and from the pool.
The Mesh Mummy Backpack handles everything. If you want something lighter for a minimal kit setup, the Mesh Equipment Bag does the job.
Making the Most of Your Winter Block
A few principles worth keeping in mind as you settle into a winter routine.
Consistency beats heroism. Three solid sessions a week, every week, will do more for your swimming than five sessions for two weeks followed by nothing. Build the habit first.
Track your sets. A Suunto or GPS watch is handy poolside for interval timing. At minimum, note what you did after each session — progressive overload only works if you know what you're progressively overloading from.
Care for your gear. Rinse everything in fresh water after each swim — suits, goggles, caps, fins. Chlorine degrades materials quickly if it's left to sit. See our guide on making your swimwear last longer for the full rundown.
Know what your gear does. If you've recently added training equipment to your bag and want to understand what each piece is actually for, our swim training gear guide covers everything in plain English.
Frequently Asked Questions
How many times a week should I swim in winter to see improvement?
Two to three sessions a week is the sweet spot for most recreational and fitness swimmers. Below that and you spend too much of each session regaining feel for the water. Above three, recovery becomes a consideration unless your volume per session is low.
Do I need to be part of a squad to do structured pool training?
No — plenty of swimmers train independently with a self-prescribed programme. That said, a squad or coached session once a week is a good investment if technique is a priority, since it's hard to self-diagnose stroke issues.
What's the best pool temperature for training?
Most competitive pools in NZ are kept between 26–28°C. This is slightly cooler than a leisure or rehab pool, which is deliberate — it keeps you comfortable at race pace without overheating.
How do I stop my goggles fogging?
New goggles usually have an anti-fog coating — avoid touching the inside of the lens, as finger oils break it down. Once the coating wears off, anti-fog spray or drops extend their life. Rinsing with cold water (not hot) after each swim also helps.
My swimsuit keeps going baggy — what am I doing wrong?
Most likely it's a suit not rated for training volume. Fashion and beach suits aren't built for regular chlorine exposure. Switching to a Durafast Elite training suit and rinsing immediately after each swim will fix it.
