Short answer: Published wind ratings in our list run from 50 to 165 mph and snow loads from 15 to 65 psf, and three kits publish no wind rating at all. Every figure comes with a condition (professional anchoring, a hard floor, "depending on configuration"), so the condition matters as much as the number.
Wind and snow ratings of every kit we compare
Every number below is copied from the brand's own product page on November 15, 2026, with the condition the brand attaches to it and a link to the page. When a brand publishes nothing, we write "not published" rather than guess.
| Kit (score) | Wind (brand) | Snow (brand) | Condition and source |
|---|---|---|---|
 PERGOLUX Pergola 4 Pro9.5/10 | 165 mph | 65 psf | "depending on configuration" (Pergolux product page) source |
 Hansø Aluminum Pergola9.3/10 | 120 mph | 25 psf | Hansø says "independently certified and tested"; anchoring per the manual source |
 Mirador 111DA9.2/10 | 102 mph | 26.6 psf | *With professional assembly & anchoring (Mirador product page) source |
| 100 mph | 17.5 psf (our division) | *Must be anchored per the manual; the pergola attaches permanently to the house source | |
| 100 mph | 17.5 psf (our division) | *Product must be anchored as specified in the Backyard Discovery instruction manual source | |
 Mirador 111S8.7/10 | 90.2 mph | 20.8 psf | *With professional assembly & anchoring (Mirador product page) source |
 Mirador 111S E-Motion8.6/10 | 90.2 mph | 20.8 psf | *With professional assembly & anchoring source |
 Paragon Lugano8.5/10 | 82 mph | 17 psf | Paragon spec block; anchoring with the pre-drilled plates source |
 Mirador 80S8.4/10 | 78.5 mph | 15.7 psf | *With professional assembly & anchoring source |
 Domi Louvered Pergola8.2/10 | 50 mph | 15 psf | Domi publishes two figures for this kit; we score the lower one source |
 Purple Leaf Caesar8.1/10 | 70 mph | Not published | when properly installed (Purple Leaf product page) source |
 Purple Leaf Athena8.0/10 | 72 mph | Not published | when fully secured by expansion screws on hardened floors (Purple Leaf product page) source |
 EROMMY Louvered Pergola7.8/10 | Not published | Not published | No wind rating on the 10×12 product page source |
 EROMMY Smart Electric7.7/10 | Not published | Not published | — source |
 VEIKOUS Steel Louvered7.6/10 | Not published | Not published | — source |
Backyard Discovery publishes a total load (2,100 lb at 12×10, up to 3,800 lb at 20×10, or 12 inches of snow); the psf figure is our own division by the roof area.
How much wind can a pergola withstand? Read the condition first
A wind rating without its condition is half a sentence. Mirador's 90.2 mph for the 111S applies "with professional assembly & anchoring". Purple Leaf's 72 mph applies "when fully secured by expansion screws on hardened floors". Backyard Discovery says its kits "must be anchored as specified in the instruction manual". PERGOLUX writes "up to" 165 mph "depending on configuration", and suggests confirming the specs for your project with its team before purchase.
In practice, that means the rating belongs to a pergola bolted to a sound concrete slab with the anchors the brand specifies. On pavers, a deck or soft ground, ask the brand what applies. Ask for it in writing if your permit office wants it.
When a brand publishes two numbers
Two brands contradict themselves. Domi lists 50 mph in the product description of its aluminum louvered pergola and 72 mph in the spec table. Mirador's 111S page says 90.2 mph while Costco and Amazon listings of Mirador pergolas print 70 mph, and the Mirador FAQ quotes 78.5 or 102 mph depending on the model. Our rule is simple: we show both and score the less favorable one, until the brand settles it.
Video: “Louvered Pergola in the Snow - Honest Review - Home Improvement” (House of Huie on YouTube). Plays from youtube-nocookie.com after you click.
Louvered pergolas in snow
A snow load in psf (pounds per square foot) is the weight the roof is designed to carry. Fresh snow is light and wet snow is heavy, so inches are a poor guide; Backyard Discovery gives both (2,100 lb or 12 inches at 12×10). Two brands tell owners what to do: Purple Leaf asks owners to open the louvers in snow and extreme weather, and Domi asks owners to clear snow and open the louvers before heavy snowfall. With louvers open, snow falls through instead of building up on top.
PERGOLUX is the outlier: up to 65 psf depending on configuration, and a warranty that excludes damage from exceeding the wind or snow limits. If you live in snow country, the published snow load is the first filter; our score gives it 15% of the total.
What your building department may ask
Ratings matter most when a permit is required, because the building department checks the structure against local design loads. The City of San Diego, for example, asks patio cover applicants for an ICC-ES or IAPMO evaluation report, "or an approved plan available from your material supplier" (Information Bulletin 206). Before you buy, ask the brand whether it can supply engineering documents for your size. Hansø, for instance, says its 120 mph rating is "independently certified and tested" without naming the lab on the page we read: that is the document to request.
Rules change from one city to the next; our permit guide lists official sources. This is general information, not engineering or legal advice.
Kits that publish no rating
Three kits in our list publish no wind rating at all on the product page we read: the EROMMY 10×12, the EROMMY motorized 10×13 and the VEIKOUS steel kit. EROMMY's warranty also excludes weather damage. That does not mean these kits blow away; it means you have nothing to show a building inspector and nothing to plan around. In our formula, a missing rating scores the floor value, 3 out of 10, for exactly that reason.
How these numbers enter our score
Wind counts for 20% of our score and snow for 15%, more than any other criterion except price. Each is scored on a fixed scale: 50 mph earns 3/10, 90 mph 7/10, 130 mph 9.5/10; 10 psf earns 4/10, 20 psf 7/10, 45 psf 9.5/10. When a brand publishes two figures, the lower one counts. The full scale is on our methodology page, and the kits with the highest published numbers lead the main ranking.
What to ask the brand before you buy
- Does the published rating apply to the size I am buying, or only to the size on the page?
- Which anchors does it assume, and on what surface: concrete slab, footings, pavers, a deck?
- Do screens, side walls or a motor upgrade change the rating?
- Can you send engineering documents my building department will accept?
- What does the warranty say about wind and snow damage?
A brand that answers these in writing is giving you something to plan around. A brand that cannot is telling you something too.
Louvers open or closed in a storm?
Brands do not all say the same thing, and the question comes up often. An owner of a 20×10 Backyard Discovery Sarasota on concrete with wedge anchors says Backyard Discovery told him to close the louvers in windy conditions (r/DIY, late 2025). For snow, Purple Leaf and Domi say open. Follow your own brand's manual, and if it is silent, ask them; do not rely on general advice for a specific kit.
Our three picks for this
Want the full order? See the best louvered pergola ranking or compare any three kits in the comparison tool.
Questions buyers ask
What is the best louvered pergola for high winds?
On published figures, the PERGOLUX Pergola 4 Pro (up to 165 mph depending on configuration), then the Hansø Aluminum Pergola Kit (120 mph), the Mirador 111DA (102 mph) and the Backyard Discovery kits (100 mph).
What is the Mirador louvered pergola wind rating?
Mirador prints 90.2 mph for the 111S, 102 mph for the 111DA and 78.5 mph for the 80S, all with professional assembly and anchoring.
What is the Purple Leaf louvered pergola snow load?
Purple Leaf does not publish one for the Athena series; it asks owners to open the louvers in snow.
Can a louvered pergola withstand a hurricane?
PERGOLUX says its Series 4 "withstands hurricanes"; its rating is "up to 165 mph depending on configuration". No brand guarantees a pergola through a hurricane, and warranties exclude damage beyond the rated limits.
Written by Laura Benson for the Best Louvered Pergola editorial team, updated November 15, 2026. Some links are affiliate links; they never change our scores (disclosure).