Les Mosses is a small, low-key area with 18 runs over 40 kilometres, climbing from 1,379 metres at the base to 1,874 metres for a vertical of 495 metres. The grading is simple: 25% beginner and 75% intermediate, with nothing steeper. Eleven T-bars and a single surface lift carry skiers up the slopes, so there are no chairs or gondolas to wait for. Here the snow is a reasonable bet through winter because the Col des Mosses sits well above the Rhône valley inversions. It is a mellow place to build mileage rather than chase vertical.

Les Mosses and the neighbouring La Lécherette share a broad, open plateau of wide, forgiving slopes, with the two sectors joined by the Arsat lift. A shuttle bus runs to Leysin, and both areas are covered by the Alpes Vaudoises regional passes. The Col des Mosses is also well known for cross-country skiing, snowshoeing and dog-sledding, so mixed groups can split between downhill and nordic days. There is little genuine steep terrain, so experts should look elsewhere. Beginners stepping up to blues and reds, and families wanting uncrowded cruising, are well served.

The 2025-26 season operates from 1 December 2025 through 15 April 2026, delivering approximately four and a half months of skiing. Typical season length extends mid-December through mid-April depending on snowfall, with early and late season dates varying annually. The resort opened for early season on 29-30 November 2025 when conditions permitted. December through April represents standard operating months across the Vaud Alps region.

Les Mosses records 430 centimetres average annual snowfall with peak accumulation during January and February. The resort's 1,450-metre base elevation and 1,874-metre summit provide superior snow preservation compared to lower Leysin during warming periods. Comprehensive snowmaking covers all 40 kilometres of piste, ensuring reliable coverage despite the area's abundant sunshine hours. February typically delivers optimal snow depth averaging 145 centimetres at summit elevation.

January through March offers the most consistent conditions, with December seeing 81 centimetres average snowfall and January delivering 117 centimetres. Spring conditions from March onwards favour Les Mosses' north-facing aspects over Leysin's sun-exposed terrain. The high plateau location between 1,450-1,650 metres maintains relative snow security throughout winter. Quieter periods occur weekdays outside Swiss school holidays, whilst weekends draw families from Geneva and Lausanne within 90 minutes' drive.

The resort frequently operates above cloud cover during winter inversions settling over the Rhône Valley, delivering exceptional sunshine hours. No night skiing operates at Les Mosses itself, though nearby La Forclaz village offers lit runs. The area hosts international dog-sled races during winter. Cross-country skiing on 42 kilometres of Nordic trails, including 850 metres of illuminated track, extends throughout the season. The plateau's exposed position creates reliable snow conditions from early season through April closure.