Weber Grill Cover Buyer's Guide: Find the Right Fit

Finding a grill cover that actually fits your Weber , and holds up through a full Midwest winter , is harder than it sounds. Covers stretch, crack, blow off in wind, or trap moisture against the lid. The right cover treats your investment like the sizable one it is. You’ll find more on protecting your setup in our Tools & Grates hub, where covers sit alongside the rest of what keeps a grill working season to season.

Not every cover is built the same, and the difference between adequate and genuinely protective comes down to fabric weight, fit, and how well the design handles airflow. Here’s what I looked for.

What to Look For in a Weber Grill Cover

Fabric Weight and Material Grade

Fabric weight is the single most predictive specification on a grill cover. It’s measured in denier , the higher the number, the denser and more tear-resistant the weave. A 300D cover will get you through a mild season. A 600D cover handles real weather. An 800D cover is built for people who leave their grill exposed through freeze-thaw cycles and don’t want to think about it again until spring.

Beyond denier, look at the weave construction and the coating. Oxford weave with a PVC or PE backing resists water better than uncoated polyester at the same denier rating. A cover marketed as “waterproof” should specify the coating, not just the fabric weight , those are two different things doing two different jobs.

UV fade resistance matters more than most buyers expect. A cover that starts gray and turns chalky white within one summer isn’t protecting your finish any better than it’s protecting itself. Look for UV-inhibitor treatment in the material spec, not just in the marketing copy.

Fit: Model-Specific vs. Universal

A cover that fits a Weber Genesis II LX 340 will not fit a Weber Spirit E-310 the same way. Grill dimensions vary significantly across series, and a cover sized for a three-burner Genesis may billow and catch wind on a two-burner Spirit. The fit question isn’t just about aesthetics , a loose cover that flaps in wind creates abrasion points that wear through the grill’s finish over time.

Model-specific covers cost more and offer less flexibility if you upgrade your grill, but they deliver a tailored fit that stays in place. Universal covers sized by width , 52 inch, 58 inch , work well when the stated dimensions match your actual grill measurements, but you need to verify against your grill’s specs rather than assume.

Measure your grill with the lid closed and the side tables folded down. Add two to three inches on each side for coverage that drapes without pulling tight. Covers that advertise a size range without listing specific compatible models require more homework on your end.

Fastening and Ventilation Design

A cover that blows off in a storm is a cover that’s not protecting anything. Fastening systems range from simple drawstrings at the bottom hem to velcro straps that wrap beneath the cart shelf. Drawstrings work on kettles and smaller grills where the geometry is simple. On larger cart-style grills, straps with buckles or snap closures hold more reliably in high wind.

Ventilation matters almost as much as waterproofing. A fully sealed cover traps condensation against the grill body, accelerating rust on the firebox and burner tubes from the inside. Air vents , typically mesh-lined openings near the top hem , allow moisture to escape without compromising weather protection. If a cover doesn’t mention ventilation and your grill sits through humid summers, that’s worth factoring into your decision.

The full range of grill accessories worth pairing with a quality cover , thermometers, grates, cleaning tools , is worth reviewing before you assume a cover alone is sufficient seasonal protection.

Top Picks

Upgraded 800D Heavy Duty Fabric 58” Grill Cover

The Upgraded 800D Heavy Duty Fabric cover makes its case in the denier rating. 800D fabric is meaningfully denser than the 600D material you’ll find on most third-party covers , the difference is noticeable when you handle both. It’s heavier, stiffer in cold temperatures, and resists tearing where lighter covers tend to fail first: the bottom hem and the corners.

The 58-inch length covers the Genesis II LX 300 series and the original Genesis 300 series, which matters because these are different grills with different footprints. That the cover accommodates both without sacrificing fit on either is a useful design choice. If you have a Genesis II LX 340 or a Genesis 300 with side burner, verify your specific model’s dimensions before ordering.

Where the 800D material earns its designation is in extended outdoor exposure. I’d put this cover on a grill that stays outside year-round without complaint. The added fabric density does make it slightly more unwieldy to fold and store than lighter alternatives, but that’s the direct trade-off for durability at this weight class.

Check current price on Amazon.

MR. COVER Grill Cover for Weber Spirit 200/300 Series

Spirit owners get overlooked in the grill cover market. Most of the third-party attention goes to Genesis-sized products, so a 52-inch cover designed specifically for the Spirit 200 and 300 series is worth noting. The MR. COVER addresses an actual gap rather than simply repackaging a Genesis cover and calling it compatible.

The 600D construction is solid for a cover in this category , heavier than entry-level options and reinforced at the stress points. The air vent and drawstring combination is a practical pairing: the drawstring keeps it from lifting in wind, the vent keeps it from becoming a humidity trap. For a grill that lives on a suburban patio through Ohio winters, that combination matters.

The brand is relatively new, which is the honest caveat here. The specs check out and the fit is model-specific, but a company with a shorter track record means less long-term data on how the material holds up after three or four seasons. For Spirit owners who’ve been making do with ill-fitting universal covers, this is still an upgrade worth considering.

Check current price on Amazon.

Unicook 58 Inch Grill Cover for Weber Genesis II

Unicook has been making grill covers long enough to have earned a reputation for consistent quality among third-party Weber accessories, and the Unicook 58-inch cover for the Genesis II and Genesis 300 series is their most visible product in this category. The comparison to the Weber 7130 , Weber’s own cover for this grill family , is a deliberate choice, and it’s not an unfounded one.

The heavy-duty construction handles moisture well. The seam stitching on Unicook covers is tighter than what you’d find on budget alternatives, and the material doesn’t go brittle after a single winter the way thin polyester does. If you’re comparing it to the Weber-branded option and wondering whether the brand name is worth the premium, the Unicook is the product that makes that question legitimate to ask.

The universal-fit caveat applies here as it does with any cover sized by width rather than model number. If your Genesis II is in standard configuration without extended side shelves or added accessories, the 58-inch fit works cleanly. Adding a rotisserie bracket or a sideburner attachment may change the geometry enough to require a different approach.

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iCOVER Grill Cover for Weber 22 Inch Charcoal Kettle

The 22-inch kettle is the most common grill in suburban America, and it deserves a cover that doesn’t treat it as an afterthought. The iCOVER is sized specifically for the 22-inch kettle form factor , the rounded dome, the leg spread, the ash catcher clearance , rather than adapted from a generic round-cover template.

Heavy-duty waterproof construction on a kettle cover has to solve a geometry problem that cart covers don’t face: the dome shape sheds water well on its own, but the joint between the lid and bowl traps moisture if the cover fits too tightly. iCOVER’s sizing leaves enough clearance to avoid that issue while still keeping wind from getting underneath.

The compatibility with 22-inch Char-Broil kettles as well as Weber is a practical bonus for households that own both, or for buyers who may upgrade brands down the road. As a kettle cover, it doesn’t carry the premium features of the Genesis options , no elaborate strap system, no air vents , but for a kettle that lives outside, the basics executed correctly is all this cover needs to be.

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Weber Premium Outdoor Grill Cover

There’s a version of this decision where the answer is simple: if you own a Weber Genesis 300 series, buy the Weber Premium cover. The model-specific fit is exact. The fastening straps are designed for Weber’s own cart geometry. The cover was engineered for this grill by the people who built the grill.

The water-resistant fabric performs well through normal seasonal exposure. It’s not the heaviest material in this roundup , the 800D third-party options carry more fabric density , but the fit advantage offsets some of that gap in real-world performance. A tailored cover that stays in place through a windstorm protects better than a heavier cover that blows off.

The honest reason to look at third-party alternatives is straightforward: Weber’s cover commands a brand premium. If your Genesis 300 series is outside year-round in a harsh climate and budget isn’t the constraint, the Weber cover is the cleanest answer. If you want more fabric density at a lower price point and are willing to verify fit dimensions yourself, the Unicook or 800D options are competitive alternatives worth pricing out.

Check current price on Amazon.

Buying Guide

Match the Cover to Your Grill Series, Not Just Your Grill Brand

Weber makes four distinct grill families , Spirit, Genesis, Genesis II, and the Summit series , and the physical dimensions differ enough between them that a cover sized for one series may fit poorly on another. Spirit grills run narrower than Genesis models. Genesis II LX grills are taller than the standard Genesis II. Before you read any product title, know your grill’s series, model number, and closed-lid dimensions.

The fastest way to avoid a return is to measure your grill yourself. Width with side tables folded down, height from ground to lid handle, depth front to back. A cover should exceed those dimensions by two to three inches in each direction , enough to drape cleanly, not so much that it billows.

Understand What “Waterproof” Actually Means

Covers advertised as waterproof range from PVC-laminated fabrics that genuinely shed water under sustained rain to lightly coated polyester that soaks through in a heavy storm. The specification that matters is the coating type and its application , Oxford weave with a PVC backing outperforms uncoated polyester at the same denier.

Seam waterproofing is a separate question from fabric waterproofing. An untaped seam is an entry point for water regardless of how good the main fabric is. Better covers either heat-seal the seams or use tight double-stitching with waterproof thread. It’s a detail that separates adequate covers from genuinely protective ones.

Evaluate the Fastening System for Your Climate

A drawstring closure is sufficient for mild climates where wind is occasional. For buyers in the Midwest, the plains, or coastal areas where sustained wind is a regular condition, strap-and-buckle systems provide meaningfully better hold. The test is simple: if your current cover has ever been found three yards from the grill on a Tuesday morning, the fastening system failed.

Strap routing matters too. Straps that route beneath the cart shelf anchor the cover at its lowest point, which is where wind gets leverage. Straps that clip at mid-height are easier to use but provide less resistance in a real storm.

Factor In Ventilation Alongside Weather Protection

The impulse to buy the most fully sealed cover available is understandable , you want moisture out, not in. The problem is that condensation forms inside any cover during temperature swings, and without airflow to carry it away, it sits against the grill body. On a cart-style gas grill, that means rust works from the inside out on components you can’t easily inspect.

Mesh-lined air vents near the top hem of a cover solve this without meaningfully compromising rain protection. The vent area is small enough that rain driven sideways in a storm doesn’t penetrate at a volume that matters, but it’s large enough to allow passive airflow on still days. Among the grilling accessories worth prioritizing, a vented cover is a low-visibility feature that pays off over multiple seasons.

Consider How Often You’ll Use the Grill

A cover that’s difficult to remove and replace is a cover you’ll start leaving off on days you “plan to grill later.” Heavier fabric covers , 800D in particular , are stiffer and bulkier than lighter options, which matters if your grill is under a covered patio you use frequently. If the cover comes on and off multiple times per week, ease of handling is a legitimate selection criterion, not just a convenience preference.

For grills used less than once a week on average, heavier covers earn their inconvenience in protection. For daily or near-daily cooks, a 600D cover that slides on and off cleanly will be used consistently, which is worth more than 200 additional denier on a cover that ends up sitting on a garage shelf.

Frequently Asked Questions

What size grill cover do I need for a Weber Genesis II?

Most Weber Genesis II models in the three-burner LX 300 and standard 300 configurations fit a 58-inch cover. The key measurement is your grill’s width with the side tables folded, plus two to three inches of clearance on each side. Confirm your specific model number against the cover’s compatibility list , the Genesis II LX 340 and the standard Genesis II E-310 have different footprints that matter at 58 inches.

Is the Weber-branded cover worth more than third-party alternatives?

The Weber Premium cover offers a model-specific fit that third-party covers approximate with width sizing, and that fit advantage is real. Third-party covers like the Unicook and the 800D option offer heavier fabric at a lower price point. Whether the brand premium is worth it depends on whether fit precision or fabric weight matters more for your specific conditions and usage pattern.

Do grill covers need air vents, and why?

A sealed cover without ventilation traps condensation against the grill body during temperature fluctuations, which accelerates rust on the firebox and burner tubes from the inside out. Mesh-lined air vents allow passive moisture escape without meaningfully compromising rain protection. If your grill sits in a humid climate or experiences frequent temperature swings, a vented cover is worth prioritizing over a marginally heavier sealed alternative.

How do I keep my grill cover from blowing off in wind?

Drawstring closures provide basic retention and work well in mild conditions. For consistent high-wind exposure, look for covers with strap-and-buckle systems that route beneath the cart shelf and anchor at the lowest point of the cover. The MR. COVER uses a drawstring appropriate for Spirit-sized grills.

Can I use a Genesis cover on a Weber Spirit grill?

A 58-inch Genesis cover will be too wide and too tall for a Spirit E-310 or Spirit II E-315, leaving enough excess fabric to catch wind and create abrasion points against the grill’s finish. The Spirit series fits a 52-inch cover, and model-specific options like the MR. COVER for Spirit 200/300 series are proportioned for the narrower Spirit cart geometry. Using an oversized cover is better than no cover, but it’s worth getting the fit right.