Les Portes du Mont-Blanc is a ski area in France, on slopes between roughly 1,669 and 1,669 m. Its mapped area is about 10 km across, with 134 marked runs and 28 lifts (about 81 km of piste in all).
Over the last twelve winters the ERA5 weather model gives it 332 cm of snowfall a season, 345th (tied) of 3,069 worldwide and 57th in France. It swings a lot from year to year: the biggest winter, 2017/18 (571 cm), brought more than twice as much as the leanest, 2016/17 (242 cm). January is usually the snowiest month, with about 97 cm.
The nearest city of any size is Geneva, about 50 km away. Below is a link to its official live camera.
Snow depth and the seven-day outlook appear here once snow starts to fall. Until then, the long-run record comes first.
Elevation range is estimated by sampling points across the ski area.
We do not show a snow depth here. The weather model we use reports snow lying on the ground — it knows nothing about grooming or snowmaking, and it is not the base depth a ski area publishes. In Japan we can check our figures against 234 weather stations. Outside Japan there is nothing to check them against, so we do not print a number we have not verified. Snow report on the official site ↗
How much snow it gets
Measured by us across 3,069 ski areas by one identical method. These are not the resort’s own published figures.
Compared with what is nearby
Within 50 km straight line. Measured the same way, so the ranks compare directly. Ski areas a few kilometres apart share a weather grid cell and can return the same figure.
| Ski area | Distance | Seasonal snowfall | World rank |
|---|---|---|---|
| Cordon | 3.9 km | 276 cm | 589 |
| Evasion Mont Blanc | 6.1 km | 355 cm | 275 |
| Megève/Saint-Gervais | 7.1 km | 427 cm | 137 |
| La Clusaz | 9.9 km | 326 cm | 378 |
| Stade de Slalom | 10 km | 343 cm | 296 |
When it falls, and how winters differ
Month by month
Month by month, the most snow falls in January. March brings 77% of January’s snowfall. That is in line with the median for ski areas in France (77%). In amount, March brings 75 cm, more than the median of 55 cm.
Winter by winter
Across the 12 winters measured, the average is 332 cm, and 9 of them fell short of it. The leanest was 2016/17 with 242 cm; the biggest was 2017/18 with 571 cm (2.4 times as much). For 26% of the 244 ski areas in France, the leanest winter was the same 2016/17: bad winters tend to hit a whole region at once.
Snowfall each winter (December–March total). The dashed line is the average; the numbers mark the leanest and the biggest winter.
Runs and lifts
Counted from the runs and lifts drawn on OpenStreetMap, within the boundary of the ski area. These are not the resort’s own published figures.
Run map
The shape of the mountain
Which way the slopes face
79% of the vertical on the runs descends to the north or east. Those slopes get the least sun, so the snow lasts longer.
By difficulty
Lift types
- Drag lift9
- Platter8
- Chairlift7
- Gondola2
- Rope tow1
- Magic carpet1
See past trail maps on Skimap.org ↗
Source: OpenSkiMap (© OpenStreetMap contributors, ODbL 1.0). How finely ski areas are drawn varies by region, so treat the counts as indicative. Vertical is the difference between the highest and lowest points of the mapped runs and lifts.
Live Cameras
Footage remains the copyright of each operator. JAPANSNOWLINE neither stores nor redistributes it.
Map
Where it sits relative to nearby resorts. For a piste map, see the official site.
Official piste map ↗More places to look
Guides covering France
- A Black Run in Colorado and a Black Run in Austria Are Not the Same Thing. The Maps Prove It. Across 2,888 ski areas: 39% of American runs are graded advanced or harder, and 9% of Austrian ones. Nobody thinks Austria is four times gentler. The grades are measuring different things.
- How Big Are Japan's Ski Areas? Smaller Than the Alps, Snowier per Kilometre Measured across nearly 1,800 ski areas: the median Japanese one has 12 km of piste against France's 25. What Japan has instead is 25 cm of seasonal snow for every kilometre of run — more than two and a half times France and three times the United States.
Updated: 8 Oct 2026, 00:52