Pool Winter Cover (2026): Above-Ground vs In-Ground Close
Accessories
A pool winter cover is the off-season sheet, not a solar blanket. Buy by pool type: cable-and-winch overlap for steel-wall above-ground, water tubes for in-ground rectangles, straps for metal frames. Then pump standing water.
Our picks
A pool winter cover is the off-season sheet that keeps leaves, light, and wind off the water while you are not swimming. It is not a solar blanket and it is not a deck-anchor safety cover.
More closing gear sits in the accessories section. Pair this page with a pool cover pump if you choose a solid sheet that holds rain. If your pool is a steel-wall or metal-frame shell, the above ground pool cover guide narrows the size and close before you get here.
Match the cover to the pool type
Comparison table
Top pick: Buffalo Blizzard Supreme Plus 28 ft Round Winter Cover
The Buffalo Blizzard Supreme Plus 28 ft Round Winter Cover is the classic above-ground close: triple-laminated polyethylene, a 4-foot overlap, and a steel cable-and-winch kit with a turnbuckle. It is supposed to rest on the water. If it looks like a trampoline, the cover is undersized or you cinched it too hard before the overlap was even.
This SKU is the 28-foot round. An 18-foot or 24-foot pool needs a matching Buffalo Blizzard diameter, not a stretch job. Too small tears at the grommets. Too big can still cinch, but you will have extra skirt to manage. Pad rusty rails and sharp coping before you tighten the winch.
This is not a safety cover. Keep people and pets off it. Leave a little water for ballast, then put a pool cover pump in the low spot after storms so the fabric does not sag into a pond. On windy above-ground closes, add pool cover clips so the skirt cannot slap the rail all winter.
In-ground safety covers use deck sockets, not rail clips. If springs will not tension because sockets are stripped, replace the brass pool cover anchors before you blame the cover fabric, or move to a dedicated safety pool cover.
Best in-ground: Shop Square 20x40 In-Ground Winter Cover
The Shop Square 20x40 In-Ground Winter Cover is a solid rectangle with a 14x14 scrim and 185 gsm fabric. The black underside keeps light out of the water, and the cover is rated down to -10°F. On a 20x40 pool, the extra material should lie on the deck so water tubes can pin it. If you have Roman stairs, a Baja shelf, or a 16x32 shell, this exact size is wrong. Size up for steps. Do not stretch.
Confirm whether water tubes ship in the box. If they do not, budget them separately. Do not substitute lumber. Read the size line twice. “Too small” is the usual winter-cover failure, not fabric that looks thin in a photo.
Skip this cover if your pool is not a matching rectangle. A round above-ground shell still wants a round cover like the Buffalo Blizzard Supreme Plus, not a 20x40 sheet folded into a circle.
Best frame-pool: QH.HOME 18 ft Round Cover
The QH.HOME 18 ft Round Above Ground Winter Pool Cover is for metal-frame above ground pools that want a snug lid. It uses 550D Oxford fabric and a ratchet tension system with perimeter rings sized for weight bags. You are pulling the cover tight around the frame, not floating a 4-ft overlap on the water. Wind has less to grab than it does on a loose tarp.
Measure the frame diameter. An 18-ft cover on a 15-ft Easy Set will billow. The same cover on a 24-ft frame will not reach. Treat it as debris and weather protection for an 18-ft frame, not as a cable-and-grommet winter tarp for a steel-wall pool. Pump standing water if the fabric holds a pond in the center. A taut cover can still collect rain.
How to close without shredding the cover
- Balance water and add winterizer before the cover goes on. A sheet does not fix green water.
- Lower water only as far as the cover maker allows. Too low plus ice is a liner problem.
- Pad sharp rails, ladders, and return fittings.
- Center the sheet. Thread cable or set tubes. Do not winch until the overlap is even.
- Set a cover pump and a downhill hose path. Check it after the first storm.
A leaf net from pool leaf rake still helps on open days before you close. Once the cover is on, stop fishing debris through a gap. That is how edges lift.
Winter cover vs solar cover vs mesh cover
A solar pool cover is for swim-season heat. Leave it on the shelf when you close. A cheap Intex-style debris cover with drain holes is a summer lid. Rain goes through. It is not a solid winter close.
Mesh winter covers are a fourth option: rain goes through, leaves mostly do not. Spring opening is wetter and the filter works harder. Pick a solid sheet if you want a darker, quieter close and you are willing to pump. Pick mesh if you would rather not babysit puddles and you accept a wetter open. Details live in best mesh pool cover.
If you already own a solar reel, that reel is for the bubble blanket. It is the wrong tool for a winter tarp. See best pool cover reel only if you are still in swim season.
Bottom line
Buy the Buffalo Blizzard Supreme Plus 28 ft Round Winter Cover if you have a traditional above-ground pool that closes with a cable and winch, and your diameter actually matches. Buy the Shop Square 20x40 In-Ground Winter Cover for a matching rectangle in-ground shell with water tubes. Buy the QH.HOME 18 ft Round Cover when the pool is an 18-ft metal frame that needs a taut, strapped lid.
Frequently Asked Questions
Is a pool winter cover the same as a solar cover?
No. A solar cover is a bubble blanket you use in swim season to hold heat. A pool winter cover is a solid off-season sheet. See our best solar pool cover guide for the heat blanket, and stay here for closing.
What size pool winter cover should I buy?
Order by the pool size on the product, then confirm overlap. Traditional above-ground covers add about 4 ft of extra material. In-ground rectangles often add about 5 ft. If you have steps or a wide top rail, size up.
Do I need water tubes or a cable?
Above-ground steel-wall pools usually use a vinyl-coated cable and winch through grommets. In-ground covers use water tubes on deck loops. Metal-frame pools often use straps and a ratchet. Do not mix those hardware stories.
Is a winter cover a safety cover?
No. Solid winter covers and taut frame covers are not certified safety covers. They will not reliably support a person or pet. For deck-anchor kits, see safety pool cover. Keep kids and animals off the cover, and pump standing water.
How do I stop rain from sinking the cover?
Leave a little water for ballast on a floating cover, then pump the deep puddles. An automatic unit from our pool cover pump guide is the usual fix after storms.
Can I use a mesh cover instead?
Mesh winter covers let rain through and catch leaves. They need a clean filter in spring. Solid covers keep more debris and light out, then need pumping. Pick solid if you want a darker, quieter close, or see best mesh pool cover if you want drainage.
When should I put the cover on?
After you balance water, add winterizer, and lower the water only as far as the cover maker allows. Closing over green water just stores a problem until spring.
What is the best pool cover for winter?
It depends on the pool. For a traditional above ground pool, the best winter cover is a solid sheet with a cable and winch, like the Buffalo Blizzard Supreme Plus 28 ft Round. For an in-ground rectangle, it is a solid cover that pins with water tubes, like the Shop Square 20x40. For a metal-frame pool, a taut ratchet lid like the QH.HOME 18 ft fits better than a floating tarp.
What is the best way to cover a pool for winter?
Balance the water, add winterizer, and lower the water only as far as the maker allows. Then center the cover, set the cable or the water tubes, and check that the overlap is even before you tighten anything. Set a cover pump in the low spot and give it a downhill hose path. A cover that is installed straight lasts longer and pumps easier.
Should I keep my pool cover on in winter?
Yes, if the cover is the right kind for your pool. A solid winter cover keeps leaves, light, and wind off the water while the pool is closed. The one thing you do not want is standing water on top, so pump the low spots after storms. A tight, pumped cover is doing its job.
Will a pool get warmer with the cover on or off?
A winter cover is not a heater, and it will not warm the pool. That job belongs to a solar cover, which is a bubble blanket for swim season. Keep the winter cover on to hold debris out, and use a solar pool cover if your goal is heat.
Does an above ground pool need a different winter cover than an in-ground pool?
Yes. Above ground covers add about 4 ft of overlap and close with a cable and winch or a ratchet. In-ground covers are sized to the rectangle and held with water tubes on loops. If you are shopping for an above ground shell, our above ground pool cover guide narrows the size and close before you buy.