When Is the Ideal Season to Start Your DIY Fibreglass Pool Project?

You’ve got the vision, the backyard space, and the confidence to go DIY with your fibreglass swimming pool. Now comes the next big question—when’s the best time to actually start?

At Complete Fibreglass Pool Kits, we’ve helped Aussies DIY install their pools across the country. From Perth to Townsville, Adelaide, Geelong, Sydney and everywhere in between, if there’s a key lesson we’ve learned, it’s this: timing can make a huge difference to your project. 

In this guide, we’ll break down the pros and cons of installing in each season—spring, summer, autumn, and winter—so you can kick off your project with clarity and confidence. No fluff, just straightforward info from a team that’s done it themselves and helped over a thousand DIY legends do the same.

Why Timing is Everything for a DIY Fibreglass Pool Installation

One of the biggest advantages of fibreglass pools is speed—unlike concrete pools that take months to build, fibreglass shells arrive pre-moulded and ready to go. That means faster installs, fewer trades, and a much smoother project timeline.

But don’t let that fool you into thinking you can just dig in whenever you like. Timing still plays a major role in how smoothly—and affordably—your DIY pool comes together. From local weather and soil conditions to council approvals and trade availability, every season comes with its own set of pros and cons.

Choosing the right time of year can help you:

• Avoid weather-related delays and downtime

• Secure better pricing on excavation and trades

• Get your pool swim-ready when it suits your schedule.

Let’s break down what to expect in each season so you can plan smart, save money, and enjoy the process from start to splash.

Spring (September - November) – The Sweet Spot

Spring is hands-down one of the best times to kick off your DIY fibreglass pool project(if you're in Queensland, winter is the equal favourite!). The weather’s warming up, the ground isn’t too wet, and best of all, you’ll be swimming long before the big fella in the red suit comes down the chimney.

Pros:

• Moderate weather makes digging and installation easier

• Soil is still firm, reducing the risk of excavation collapse

• More tradies available than in peak summer

• Ideal weather for landscaping and fencing post-install - Once your pool is in, spring offers great conditions to finish off your surrounds—whether it’s decking, paving, turf or pool fencing—without the heat or rain interruptions of other seasons.

Cons:

• Unexpected rain can delay digging and installation

• The closer you get to summer (peak season) = more demand = potentially higher trade prices

• Lead times for pool shells may start to stretch - If you haven’t ordered your fibreglass shell early enough, you may find longer lead times as manufacturers ramp up for the peak season rush.

🛠️Pro Tip:

There’s something about spring that gets people moving on home projects, especially with summer just around the corner. It's the season of "let’s get it done" energy - and for good reason. If you start early enough, you’ll have time to book the right tradies, avoid the Christmas rush, and be kicking back in your pool when summer hits. Just don’t leave it too late—things get busy fast.

Summer (December - February) – High Demand, High Costs

Summer is when everyone wants a pool, but does that mean it’s the best time to install one? Not always. The biggest perk? You can install a fibreglass pool in as little as a week, meaning you could be swimming before the hottest days hit.

• Dry weather means minimal rain delays

• Longer daylight hours give you more time to work

• Pool shells may be in stock from cancelled orders

• Easier to rope in friends and family if they are having a summer break.

Cons:

• Most suppliers and freight companies operate on reduced hours or close entirely over Christmas and New Year, which can push out delivery schedules

• Peak season for pool installers and trades = higher costs & delays

• Council approval times blow out compared to the other seasons

• If you're up north, summer also brings cyclone season. Sudden storms or heavy rainfall can quickly derail excavation or cause flooding in open pits

• Landscaping doesn’t have time to establish and can easily perish in the summer heat.

🛠️Pro Tip: 

Summer might seem like the perfect time to install a pool, but unless you’re super organised, it can become a hot and costly scramble. If you want to be swimming in summer, start your planning and approvals in spring, then hit the ground running before the holiday chaos kicks in. You don’t want to be on the end of a shovel on Christmas Eve with in-laws on the way for a Christmas Day swim.

Autumn (March - May) – The Budget-Friendly Option

If you’re looking to save a few bucks and avoid the seasonal chaos, autumn is one of the smartest times to install your DIY fibreglass pool. With the summer rush over, tradies are more available, prices start to dip, and local councils aren’t drowning in applications.

You might miss out on summer swimming this time around—but you’ll be set up perfectly for next year,  you’ll likely spend less getting there and have more of a stress-free installation.

Pros: 

• Trades and suppliers often lower prices after peak summer

• Easier to schedule tradies around your availability

• Better weather for turf laying and planting

• Lower demand means faster approval times for council permits

• Post-summer sales and clearance deals on equipment and landscaping.

Cons:

• You’ll miss the summer swimming season 

• Rainy periods (especially in May) can delay progress

• Shorter daylight hours if you are installing after hours and on weekends.

🛠️Pro Tip: 

Autumn is a gem for DIYers who aren’t in a rush. You’ll avoid the heat, the crowds at Bunning’s, and the peak pricing. Just make sure you stay ahead of any rain forecasts, especially in May, and take advantage of off-season discounts while they last. 

Winter (June - August) – The Smart Planner’s Choice

Winter might not scream “pool time,” but it’s actually one of the most strategic seasons for a DIY fibreglass pool installation—especially if you’re planning ahead for summer. With fewer people booking projects, tradies are more available, suppliers may offer discounts, and council approvals can often come through faster.

If you’re not in a rush to swim, this season could set you up perfectly for a smooth and budget-friendly install.

Pros:

• Lowest demand = cheaper pricing on excavation and trades

• Shorter wait times for council approvals and inspections

• Plenty of time to order your shell and equipment before the spring rush

• Cooler weather makes manual work less physically draining

• No pressure from the family to have the pool swim ready ASAP.

• If you are in sunny Queensland, winter is the dry season and ideal for installation

Cons:

• Wet or muddy soil can delay excavation or require extra drainage (unless you are in QLD)

• Shorter days limit working time, especially after hours

• Delays in curing or setting times for concrete and adhesives

• Reduced tradie availability in some regional areas due to winter breaks.

🛠️Pro Tip:

Winter is the season for forward thinkers. If you line everything up now—approvals, pool shell, and trades—you’ll be ready to roll come spring, without battling price hikes or tradie shortages. Plus, cooler temps make digging and prep work far more manageable. Just keep an eye on the forecast—rain and mud don’t mix well with a hole in the ground.

Tips for a Smooth DIY Fibreglass Pool Installation

Installing a DIY fibreglass pool is one of the most rewarding upgrades you can make to your backyard—and it’s 100% doable with the right plan. Even though fibreglass pools are faster and simpler to install than concrete, a bit of preparation goes a long way.

Here’s how to keep your project on track, on budget, and as stress-free as possible.

Start Planning Early

The biggest mistake DIYers make? Leaving everything to the last minute. Pool shells, excavator hire, and tradies book out months ahead—especially during spring and summer.

What to do:

• Get your council approvals in early (allow 4–6 weeks minimum)
• Order your pool shell well ahead of peak season
• Book excavation and essential trades before demand surges.

Understand Your Soil Conditions

Soil isn’t just dirt—it’s the foundation of your pool. Poor ground conditions can lead to shifting, drainage issues, or even shell damage down the track.

What to do:

• Consider a professional soil test—it’s a few hundred bucks that could save you thousands
• Know your soil type to plan backfilling and drainage.

Book Key Trades Early (Yes, Even for DIY)

DIY doesn’t mean doing everything alone. Some jobs are best left to the pros—especially when it comes to safety and compliance.

Who you’ll likely need:

• Excavator Operator
• Licensed Electrician
• Plumber (Optional)
  
  

A Smooth Pool Installation is All About Planning!

Whether you’re chasing summer swims or just want to save some serious cash, the best time to install a DIY fibreglass pool depends on your goals. Spring gives you the perfect weather window. Autumn and winter offer cost savings and easier scheduling. Summer? Great if you’re already prepped, but don’t expect it all to be done in two weeks.

Whatever season you choose, the real game-changer is planning. Sort out your approvals early, line up your trades, and know what to expect each step of the way. That’s how you avoid budget blowouts and get your pool in the ground without the stress.

Pro Tip:

Use autumn to do your homework. Get your permits, book your trades, and lock in your pool shell. Install your pool over winter and then when spring rolls around, you’ll be applying the finishing touches and be ready for summer while everyone else is just getting started.

Want to start your pool project the right way? Get in touch for expert advice on choosing the perfect fibreglass pool kit for your backyard!