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The short version: the best gas grill cover is the one cut for your specific grill, and for the most common grills that is the Weber 7139 Premium for Spirit 300 and 400 series carts, or the Weber 7130 for Genesis II and Genesis 300. If you want the same dimensions for roughly half the price, the Unicook 58-inch is the value pick, and the Unicook 60-inch fits most three-to-five-burner grills of any brand. Fit and ventilation matter far more than brand.
Below is the ranked field, why a sealed cover can actually accelerate rust, how to measure properly, and what to do before you cover a grill for winter.
Top Picks at a Glance
Our #1 Pick: Weber 7139 Premium Grill Cover
The single strongest predictor of whether a grill cover works is whether it fits, and a model-specific cover fits in a way that a size-range cover cannot. The 7139 is cut for the Spirit 300 and 400 series cart profile — the right width, the right depth, and crucially the right height, so it reaches the bottom of the cart without pooling a puddle on the lid.
The fabric is a heavy water-resistant polyester with a UV-stable coating on the outside rather than a bare vinyl skin, which is why it survives sun better than the cheapest covers on the market. Straps front and back hold it against wind, which is the second most common reason covers fail — a cover that lifts and flaps abrades itself against the lid handle and tears at the seams within a season.
Consensus Score ████████░░ 8.8
The complaints are consistent across the review record. Price is first — third-party covers with the same dimensions cost roughly half, and reviewers say so plainly. UV degradation is the life-limiting factor even here: expect chalking and coating flake on the sun-facing panel around year three. Limited venting is third, and several owners report needing to lift the cover on humid mornings to let the grill dry. Model confusion is fourth and causes a lot of returns — Weber cover numbers map to specific series and generations, and buying by grill name rather than by the cover number listed in your grill manual is how people end up with the wrong one. And a minority report the straps loosening over time.
Best Gas Grill Covers 2026: The Ranked Field
Best for Weber owners who want a cover that actually fits
- Cut to the exact dimensions of the Spirit 300 and 400 series
- Heavy water-resistant polyester with a UV-stable coating
- Fastening straps to hold it in wind
- Weber warranty support
Why buy it: a cover cut for one specific grill rather than a size range, which is the difference between a snug fit and a bag that flaps and pools water.
Best for Genesis II and Genesis 300 series grills
- Fits grills up to 59 in wide
- Premium heavy-duty polyester, water and UV resistant
- Breathable fabric to reduce trapped moisture
- Velcro straps for a fitted look and wind resistance
Why buy it: the factory cover for the most common large Weber, with breathable fabric that avoids the condensation problem sealed vinyl covers create.
Best for the same fit as the factory cover for half the price
- Sized against the Weber 7130 dimensions
- Waterproof PVC-coated fabric, fade resistant
- Handles, straps and air vents
- Storage bag included
Why buy it: cut to the same dimensions as the factory cover at roughly half the cost, with vents and handles the original does not always include.
Best for three to five burner grills of any brand
- 60W x 23D x 42H in — fits most 3 to 5 burner carts
- Waterproof vinyl-coated fabric
- Padded handles and click-close straps
- Air vents to cut condensation and wind lift
Why buy it: the size that fits the largest share of mainstream four-burner grills, from the brand that dominates the value end of this category.
Best for wide five and six burner grills with side burners
- 65 in wide to clear side burners and shelves
- Same waterproof coated fabric and vents
- Handles and straps at the corners
- Fits Weber, Char-Broil, Nexgrill and Brinkmann carts
Why buy it: the extra width most people need once a side burner and folded shelves are counted, which a 60-inch cover leaves exposed.
Best for two-burner and compact three-burner grills
- Fits grill widths up to 48 in
- Water-resistant heavy polyester
- Fastening straps front and back
- Cut for the Spirit cart profile
Why buy it: the right cover for a small grill — an oversized cover on a compact cart is worse than none, because slack fabric pools water and catches wind.
Quick Comparison
| Product | Best for | Rating | Price | Buy |
|---|---|---|---|---|
| Weber 7139 Premium Outdoor Grill Cover for Spirit 300 Series and Spirit 400 Series 4-Burner Gas Grills | Best Overall | 4.712,813 ratings | ~$60 | Price |
| Weber 7130 Genesis II 300 Series Premium Grill Cover, Fits Grill Widths Up To 59 Inches | Best for Genesis Grills | 4.79,954 ratings | ~$70 | Price |
| Unicook 58-Inch Grill Cover for Weber Genesis II, LX 300 Series and Genesis 300 Series, Heavy Duty Waterproof | Best Value | 4.710,689 ratings | ~$30 | Price |
| Unicook Grill Cover 60 Inch, Heavy Duty Waterproof Gas Grill Cover for Outside, Fade Resistant | Best Universal Fit | 4.711,902 ratings | ~$32 | Price |
| Unicook Heavy Duty Waterproof Barbecue Gas Grill Cover, 65-Inch, UV and Fade Resistant | Best for Large Grills | 4.715,054 ratings | ~$38 | Price |
| Weber 7138 Premium Outdoor Grill Cover for Spirit 2-Burner and 3-Burner Gas Grills, Fits Widths Up To 48 Inches | Best for Compact Grills | 4.712,813 ratings | ~$50 | Price |
Fit Comparison
| Cover | Fits width | Fabric | Vents | Fastening |
|---|---|---|---|---|
| Weber 7139 Premium | Spirit 300 / 400 series | Water-resistant polyester | Limited | Straps |
| Weber 7130 | Up to 59 in | Breathable polyester | Breathable fabric | Velcro straps |
| Unicook 58 in | Genesis II / 300 series | Waterproof coated | Yes | Handles + straps |
| Unicook 60 in | Up to 58 in wide | Waterproof coated | Yes | Handles + straps |
| Unicook 65 in | Up to 63 in wide | Waterproof coated | Yes | Handles + straps |
| Weber 7138 Premium | Up to 48 in | Water-resistant polyester | Limited | Straps |
How We Rank
We never buy, fit or weather-test the products on this site, and we say so on every ranking page. These rankings are built from aggregated owner reviews, star ratings, review volume, manufacturer specifications and expert consensus from established grilling publications. For grill covers we weight four things: fit accuracy against the stated dimensions, which is the largest single source of one-star reviews, moisture management — vents or breathable fabric, because a sealed cover can hold a grill damp — wind retention, and UV survival as reported after two or more seasons. Full method on how we rank.
The Covers, Reviewed
1. Weber 7139 Premium — Best Overall
Covered above. What owners like: exact fit on Spirit 300 and 400 carts, heavy UV-coated fabric, straps that hold, and brand warranty support. What they complain about: price versus third-party equivalents, chalking by year three, limited venting, and confusing model numbering. Check price.
2. Weber 7130 — Best for Genesis Grills
The factory cover for the Genesis II and Genesis 300 series, fitting grills up to 59 inches wide. The important difference from the 7139 is fabric: this one is breathable as well as water and UV resistant, which addresses the condensation problem more directly than vents do. Velcro straps pull it in for a fitted look and stop it lifting.
Consensus Score ████████░░ 8.6
Recurring complaints: breathable means water-resistant rather than fully waterproof, and in sustained heavy rain reviewers report some seepage through the top panel. The Velcro loses grip after a couple of seasons of use. It is among the more expensive covers here, and there are third-party covers cut to the same dimensions for well under half. And it is large enough to be awkward to fit alone on a windy day.
3. Unicook 58-Inch — Best Value
Unicook built its business on cutting covers to the same dimensions as the factory originals and selling them for half. This one targets the Genesis II and 300 series footprint, and adds two things the factory cover does not always include: proper air vents and reinforced handles. The waterproof coated fabric is genuinely waterproof rather than resistant.
Consensus Score ████████░░ 8.7
Recurring complaints: the coating is the life-limiting component and reviewers describe it flaking off the inside surface, often starting in year two — the outer fabric survives longer than the waterproofing does. Sizing runs slightly generous, so some owners report more slack than they would like. The included storage bag is thin and tears. And the seams are single-stitched in places where the factory cover is double-stitched.
4. Unicook 60-Inch — Best Universal Fit
The size that covers the largest share of mainstream four-burner cart grills — 60 inches wide, 23 deep, 42 high — regardless of brand. If you own a Char-Broil, a Nexgrill, a Monument or any of the many similar four-burner carts, this is the default answer, and the vents, handles and click-close straps are all present.
Consensus Score ████████░░ 8.6
Recurring complaints: universal means approximate, and reviewers with grills at the edges of the range report either slack fabric or a cover that will not quite reach the bottom of the cart. Side burners and unfolded shelves push many grills past the stated width and this is the most common return reason. Coating flake in year two, as with its siblings. And the cover is dark, which means it absorbs heat and traps warmth on sunny days.
5. Unicook 65-Inch — Best for Large Grills
The wider version, and the one most people with a side burner actually need. Measuring a grill body and forgetting the side burner and the folded shelves is the single most common sizing error in this category, and 65 inches covers the difference on most large carts.
Consensus Score ████████░░ 8.5
Recurring complaints: on a grill that does not need the extra width, the surplus fabric is a liability — it pools water and catches wind. It is heavy and unwieldy to fit alone. The same coating-flake pattern applies. And at this size, the strap anchor points carry more load and are correspondingly the first place seams fail.
6. Weber 7138 Premium — Best for Compact Grills
For two-burner and compact three-burner Spirit grills up to 48 inches wide. Small grills are the ones most often covered badly, because the temptation is to reuse an oversized cover from a previous grill — which is worse than useless, since the slack pools water directly on the lid.
Consensus Score ████████░░ 8.5
Recurring complaints: the same premium pricing as the rest of the Weber cover range for a smaller piece of fabric. Compatibility across Spirit generations is genuinely confusing and buyers regularly order the wrong one — the cover number in the grill manual is the reliable reference. Venting is limited. And, as everywhere, the sun-facing panel is where it eventually fails.
What Owners Actually Complain About
Five complaints dominate the low-star reviews across every grill cover brand. Wrong size is first by a distance, and it splits between covers that will not reach and covers so large they pool water. Coating flake is second — the waterproof layer on the inside surface peels away in sheets, typically in year two or three, and it is the defining failure of coated-fabric covers. Blowing off is third, and in most of those reviews the straps were never fastened. Trapped moisture and rust is fourth, and it is caused by sealed covers with no ventilation or by covering a grill that was still warm. Seam failure at the straps is fifth, and it is worse on oversized covers because there is more fabric loading the anchor points.
How to Choose a Gas Grill Cover
Measure first, in three dimensions, with the side shelves in the position they will be under the cover. Width matters most, and you must include the side burner and any folded shelves — forgetting them is the number one sizing error. Then aim for a cover within an inch or two of that width rather than a generous one.
Second, check ventilation. You want either mesh air vents or a fabric described as breathable. A cover that traps humidity against a steel firebox does more harm than good, and burner corrosion is what ends most gas grills. Third, check the fastening: straps that pass under the cart beat an elastic hem in anything windy. Fourth, if a model-specific cover exists for your grill, look up the cover number in the grill manual rather than guessing from the model name — Weber and other manufacturers reuse names across generations with different dimensions.
Then use it correctly. Let the grill cool completely and dry before covering, clean the grease tray regularly — NFPA lists clearing grease and fat buildup as basic grill upkeep — and in winter clean the grill properly before you put it away — leftover grease attracts rodents, which chew burner tubes and igniter wiring, and that is one of the most common spring repairs. A cover changes none of that: the grill underneath should still stand outdoors only, well clear of the house, deck railings and overhanging branches, per NFPA grilling safety guidance. Our guides on cleaning a gas grill and how long a gas grill lasts cover the rest of the maintenance routine.
The Verdict
Buy the cover cut for your grill. For Spirit 300 and 400 carts that is the Weber 7139; for Genesis II and 300 series it is the Weber 7130 or, at half the price, the Unicook 58-inch. For any other four-burner cart the Unicook 60-inch fits most of them, step up to the 65-inch if you have a side burner, and use the Weber 7138 on compact grills rather than draping an oversized cover over them. Check price on Amazon →
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