25 Costco Summer Must-Haves You’ll Regret Not Buying Sooner

Summer is all about making memories—whether it’s lounging poolside, hitting the beach, or hosting epic backyard gatherings. And no retailer helps you do it better (and more affordably) than Costco. Their summer aisles are packed with essentials that combine high quality, smart design, and unbeatable value.

From inflatable waterslides to premium paddleboards, here are 25 Costco summer must-haves that you’ll use year after year—and definitely wish you bought sooner.

1. Tommy Bahama Beach Umbrella

Match your beach chair with this stylish umbrella featuring a 7-ft canopy, built-in tilt mechanism, wind vent, and UPF 50+ sun protection. It comes with its own carrying bag and sets up in seconds.

2. HappyHop Inflatable Waterslide

Turn your backyard into a mini waterpark! This inflatable slide features a climbing wall and splash pool and inflates in minutes with the included blower. Crafted from puncture-resistant material for long-lasting summer fun.

3. Hyperlite Life Vests

Whether you’re on a boat, paddleboard, or at the lake, these lightweight vests offer superior flotation and comfort. Adjustable straps and quick-release buckles ensure a secure fit for both kids and adults.

4. KidKraft Outdoor Playhouse

Crafted from weather-resistant wood, this adorable playhouse includes working doors and windows, a chalkboard, and even a pretend kitchen. It’s the perfect spot for imaginative play—and it looks great in any backyard.

5. Body Glove Pool Inflatable

Float in style with this ergonomically designed inflatable lounge. Features include cup holders, mesh bottom for breathability, and side handles for added control. It’s a summer must-have for relaxing pool or lake days.

6. Igloo Insulated Beverage Tote

Keep your drinks icy cold for hours with this soft-sided cooler that holds up to 36 cans. It’s leak-resistant, lightweight, and comes with handy zippered compartments for snacks and utensils.

7. Mac Sports XL Folding Wagon with Brakes

Built with a steel frame and oversized wheels that glide over sand and grass, this foldable wagon carries up to 150 lbs of gear. It’s the ultimate transport solution for family beach days or summer festivals.

8. Keepcool Shopping Cooler

This oversized, insulated tote is a game-changer for keeping groceries frozen or bringing cold snacks to the park. Collapsible and easy to store, it’s perfect for errands, road trips, or impromptu picnics.

9. Tommy Bahama Beach Chair

This isn’t your average beach chair. With multiple reclining positions, padded headrest, built-in cupholder, storage pouch, and backpack-style straps, it’s made for comfort and convenience. The foldable, lightweight frame makes it a breeze to carry, even when your hands are full.

10. Connect 4 Giant Edition

This oversized version of the classic game is a hit at every backyard BBQ, birthday party, or beach day. Built with weather-resistant materials, it’s sturdy, fun for all ages, and guaranteed to bring out some friendly competition.

11. Bug Repelling Fans

Say goodbye to citronella candles and sticky sprays. These quiet, bladeless tabletop fans create a consistent breeze that deters mosquitoes and flies—perfect for outdoor dining and picnics.

12. Beach Towel (Multi-Pack)

Costco’s oversized beach towels are ultra-soft, ultra-absorbent, and come in fun, colorful patterns that resist fading. Great for the beach, pool, or even as a picnic blanket.

13. Bunch O Balloons Reusable Water Balloons

These colorful silicone balloons refill and self-seal in seconds—no mess, no waste. Reusable up to 1,000 times and great for eco-friendly water fights all summer long.

14. Stanley Jr Garden Tool Set

Let little ones get their hands dirty with this kid-friendly garden set. Includes a rake, trowel, and gloves, all designed for small hands with safe, sturdy materials.

15. Shark Flex Breeze Fan

This portable, cordless fan doubles as a misting system for the ultimate cooling combo. Rechargeable and compact, it’s a patio, RV, and outdoor camping essential.

16. Igloo Cooler

Keep food and drinks cold for up to five days with this rugged cooler. Features include a drain plug, molded cup holders, and sturdy latches—ideal for tailgating or camping trips.

17. SLK Premium Pickleball Set

This USAPA-approved set comes with paddles, balls, and a carrying case. Whether you’re a seasoned player or a beginner, it’s a top-quality bundle for backyard matches or the local courts.

18. H2O GO Sprinkler Pad

Instant backyard fun! Connect this sprinkler mat to your hose and let the water spray in all directions. Built with non-slip material for safe toddler play.

19. Gazillion Bubbles Machine

Fill the air with thousands of bubbles per minute with this battery-powered machine. Comes with solution and is perfect for parties, playdates, and endless backyard giggles.

20. Tobin Sports River Tube

Float the day away in this extra-comfy tube featuring a mesh seat, backrest, cup holder, and heavy-duty handles. Perfect for lakes, lazy rivers, and chill pool sessions.

21. Performer GTS Paddle Board

This inflatable stand-up paddleboard is a summer favorite. It inflates quickly, rides steady, and includes everything you need—paddle, pump, storage bag—for exploring open water with ease.

22. Sunday Afternoons Sun Hats

Protect your face in style with these breathable, crushable, and UPF 50+ sun hats. Adjustable straps and moisture-wicking bands make them ideal for hiking, gardening, or beach lounging.

23. Tobin Sports Breakwater Pro Inflatable Kayak

Lightweight but rugged, this inflatable kayak seats two and features reinforced sides, adjustable seats, oar holders, and a carry bag. It’s lake-ready and easy to store or transport.

24. Penn Badminton Set

Bring a competitive edge to your backyard! This complete set includes rackets, shuttlecocks, net, and poles. Easy to assemble and perfect for all skill levels.

25. Scott Burke Boogie Board

Catch waves with ease using this lightweight, slick-bottomed boogie board. It includes a wrist leash and durable EPS core, perfect for kids and adults learning to ride the surf.

Final Thoughts

Costco knows how to do summer right. Whether you’re planning pool days, beach trips, camping weekends, or backyard adventures, these 25 summer must-haves deliver quality and value you’ll enjoy year after year.

Don’t wait until the heat kicks in and everything’s sold out—grab your favorites now and make this summer your best one yet!