El Niño and Canadian Skiing 2026/27: The Signal Is Real, and It Is Not Where You Ski

El Niño does measurably reduce snow in Canada, at low elevation. Across all ten stations, seasonal snowfall came in at 79%, 77% and 65% of normal in the three very strong events, and peak snow depth at 75%, 84% and 79%. Both survive correction for the number of measures we tested.

Restrict the same test to ski country and there is nothing left. Using only stations in a real snow climate, or only stations above 700 m, not one measure survives. The effect lives below the skiing.

Whistler's own mountain station, the highest we have, has never had a bad one. At 1,835 m with fifty-one winters behind it, the three strongest El Niños came in at 107%, 100% and 124% of its median snowfall.

NOAA's Climate Prediction Center issued its most recent ENSO Diagnostic Discussion on 13 August 2026. It carries an El Niño Advisory, a July Niño-3.4 index of +1.4 °C, and sea surface temperatures more than 2 °C above normal in the eastern equatorial Pacific.

CPC puts the chance of a very strong event above 90%, and the chance of a historic one during October to December at 69%, meaning larger than any El Niño back to 1950. That historic threshold is measured on the Relative Oceanic Niño Index rather than the ONI that most coverage will quote.

CPC's own hedge belongs in every one of these pieces: with an event this size the chances of seeing impacts consistent with El Niño are larger, but they are not guaranteed. The next discussion is due 10 September 2026.

Warm water in the equatorial Pacific shifts tropical thunderstorm activity east, that relocated heat source strengthens the subtropical jet across the southern United States, and the polar jet retracts north. Storms arrive further south, more often, and warmer.

Two things follow for Canada. The first is that the wet-south, dry-north dipole pivots over the United States, so Canada sits beyond its far end and gets a weakened, smeared version.

The second matters more. Most of what El Niño does to the Pacific coast is about temperature, not dryness. We found this in the Cascades, where the same winters delivered normal or above-normal precipitation and below-normal snow, because the water arrived as rain. Rain instead of snow is an elevation problem by definition: it bites hardest at the bottom and stops mattering somewhere above the freezing level.

So the prediction, before any Canadian data is opened, is that a real signal should appear at low elevation and fade with height. That is a testable claim, and it is what our stations show.

Each figure is that winter's snowfall as a percentage of that same station's own median, so every station is being compared with itself. The elevation column is the point.

Look at Courtenay Grantham, at 81 m on Vancouver Island. It recorded no measurable snowfall at all in the winter of 1982-83, 29% of its normal in 1997-98 and 19% in 2015-16. As a percentage that is devastating, and it is exactly the sort of figure that ends up in a headline.

Its normal season is 69 cm. That is a place where snow is marginal in any winter, and a degree of warmth takes all of it. It also sits 21 km from, and roughly a kilometre below, the ski area it happens to be nearest to. Nobody skis at 81 m.

Now read up the column. At 1,835 m, Whistler's three El Niño winters were 107%, 100% and 124%. In between, the pattern is scattered rather than graded, which is what you would expect from three winters at a handful of stations spread across five thousand kilometres.

We tested eleven measures: snowfall, peak snow depth, cold nights, thaw days, freeze-thaw cycles, rain days, days with a real base underfoot, and the same temperature counts narrowed to the Christmas and Presidents' week holiday windows. Each asks where the three very strong El Niño winters rank among all the ENSO-neutral winters in the same records.

Across all ten stations, three measures survive a Benjamini-Hochberg correction for having asked eleven questions: snowfall (79%, 77% and 65% of normal), peak snow depth (75%, 84% and 79%) and February thaw days. Taken at face value that is a real, correction-surviving El Niño effect on Canadian snow.

So we asked the only question that matters for a ski trip: does it hold in the places you would actually ski?

Drop the stations that are not in snow country and the effect goes with them. Drop the stations below 700 m and it goes again. Two different ways of asking “does this apply where people ski?” and both answer no.

This is not us torturing the data until it confesses. It is the prediction the physics made before we started: a rain-line effect should be large at the bottom and small at the top. The signal is real and it is real in the wrong places.

Real talk: three winters is a small sample, and five stations is a small subset. A null from a subset is weaker evidence than a positive from the whole. What we will not do is quote you the all-station result as though it described your holiday, when the stations that produce it sit at sea level.

Most weather stations sit in valleys. Whistler has one at 1,835 m, about a mile from the resort, with fifty-one winters of daily observations. That is a rare thing: a mountain record at a ski mountain, high enough to describe the terrain rather than the car park.

Its median winter delivers 879 cm of snowfall and peaks at about 306 cm on the ground.

Two of the three very strong El Niño winters were unremarkable at Whistler and the third was well above normal. 2015-16 was the mountain's eleventh snowiest winter in fifty-one years and finished with its fifth deepest snowpack. That is the same winter that collapsed the snowpack at Stevens Pass in Washington, four hundred miles south and six hundred metres lower.

Now the comparison rows, because they are the honest part. Whistler's worst winter in fifty-one years, 2014-15, was an El Niño winter, a weak one. Its best, 1998-99, was a strong La Niña. Predicting Whistler's season from the Pacific would have got both exactly backwards.

And this station is 1,160 m above Whistler Village. The village sits at 675 m, Creekside slightly lower. Nothing here says the village will be cold. It says the mountain has been fine, which is a narrower claim, and for a family it is the narrow one that needs watching: ski school, the magic carpets and the walk back to the hotel all happen at 675 m, which on this evidence is exactly the elevation band that suffers.

Grouse Mountain, above Vancouver, has a station 1.5 km from the resort with a record going back to 1972. It looked like the perfect companion to Whistler: same coastal storms, same ocean, 700 m lower. Exactly the comparison you want if you think elevation is what decides a warm winter.

Its snow-depth record runs between 170 and 559 cm in every winter it reported up to 2010. From 2011 it reads 13, 15, 14, 12, 125, 31, 15, 13 and 2.

Taken at face value that says Grouse finished the 2015-16 El Niño with 12 cm of base against a normal of 222. It is a spectacular number, and it would have been the perfect illustration of everything above. It is also, once you look at the series rather than the single year, an instrument or an observer changing rather than a mountain losing its snow.

Its snowfall record halves in the same year, by an amount small enough that a reasonable automatic check would wave it through. A change like that belongs to the station rather than to one measurement, so everything after that year had to go, and what was left was too short to use. Grouse is not in this article at all.

We mention it because the comparison we lost was the one we most wanted, and because a number that perfectly confirms your argument is the one to check hardest.

Ten usable stations across a country this size reaches nine of the twenty-four Canadian resorts we write about, and only Whistler and Fernie have a station both close and high.

We have something to say about: Whistler Blackcomb, Fernie, Kicking Horse, Panorama, Red Mountain, Mount Norquay, Banff Sunshine, Mont Tremblant and Bromont, with several of those leaning on a station some distance away in a valley.

We have nothing honest to say about: Lake Louise, Revelstoke, Big White, Sun Peaks, Silver Star, Marmot Basin, Apex, Kimberley, Whitewater, Grouse Mountain, Mount Washington on Vancouver Island, Mont Blanc, Blue Mountain, Le Massif or Stoneham.

Two deserve a footnote rather than a number. Sun Peaks has a station at 1,840 m three kilometres from the resort and Silver Star one at 1,586 m practically at the lodge, and both are too short to test properly. For what little it is worth, Sun Peaks recorded 125%, 98% and 113% of its own median in those winters and Silver Star 93% and 118% in the two it saw. Both are high stations, and both look like Whistler rather than like the coast.

Setting this beside what we found in Vermont makes the point better than either does alone.

Eastern resorts cover most of their terrain with manufactured snow: Killington 71%, Stowe 83%, Hunter Mountain 100%. That insures them against a lack of snow and leaves them fully exposed to a lack of cold, because the guns need cold nights to run. In Vermont a very strong El Niño reliably takes the cold away, and that is the whole story.

Whistler covers under 7% of Whistler Mountain and about 11% of Blackcomb. It is not insured against anything. It relies on roughly 11.7 m of natural snow a year, and on having 1,500 m of vertical so that when the freezing level rises there is still a great deal of mountain above it.

Opposite strategies, tested in opposite ways. The eastern resort is vulnerable to a warm winter and protected against a dry one. Whistler is vulnerable to a dry one and, because of its height, better protected against a warm one than almost anywhere else on the Pacific coast.

Choose on elevation, and specifically on where the beginner terrain sits. That is the one thing this data supports strongly. The damage is concentrated at the bottom of the mountain, which is where children spend their week.

At Whistler, watch the freezing level rather than the forecast total. The mountain has not had a bad very strong El Niño in fifty-one years of records. The village at 675 m is a separate question, and rain in the village while it snows on the peak is an ordinary Whistler event in any winter.

Do not let El Niño outrank the things that decide your week. Ski school quality, whether you can walk to the lifts with children, travel time from the airport and the price of the week all matter more than a Pacific temperature anomaly whose effect on your terrain we could not detect.

Do not read any of this as a promise. Whistler's worst winter in fifty-one years arrived without warning during a weak El Niño. Any resort can have a poor season for reasons that have nothing to do with the Pacific.

Check back in the autumn. If the September or October updates show the event restructuring, the reasoning behind all our El Niño pages changes and we will update them.

The same elevation logic runs through this whole series. In the Cascades it is a rain problem rather than a drought, and the highest station we checked went the other way. In Tahoe the signal is the strongest positive one in North America. In Colorado and Utah the famous north-south gradient turns out to be an artefact of baseline snowpack. In Vermont and New Hampshire it takes the cold rather than the snow. Everything, region by region, is in our guide to El Niño and the 2026/27 ski season.