April is a transition month in the Haute-Savoie mountains. The snowline still sits between roughly 1,400 and 1,800 metres depending on the area and slope aspect. But that does not mean the mountains are off limits. It means you need to know which sectors open first: valley floors, south-facing slopes, and the shores of the big lakes.
Lake Annecy and its surroundings: open from early April
The Annecy basin is one of the earliest areas to become accessible each spring. Between the lake and the lower foothills of the Bauges, trails below 1,000 metres are often snow-free by the first weeks of April. The waymarked paths above Duingt or Talloires already offer pleasant spring walking. The Les Maisons hike at Duingt is an easy, well-exposed route that needs no special equipment in April.
This sector has a lot going for it: well-maintained paths, car parks accessible without driving through snow, and a microclimate that tends to be milder than the Faucigny or the Chablais. It is also one of the few places where lightweight mid-season shoes are enough.
The lower Chablais: south-facing slopes and valley floors
The Chablais holds some genuinely early-season options, as long as you keep below 1,100 metres and pick well-exposed slopes. The valleys around Bellevaux have forest trails and a handful of low-level lake walks. The Lac de Vallon at Bellevaux is a good example: minimal elevation gain, a moderate altitude, and a pleasant setting for an early spring outing.
Gorge walks and forest paths are also good April choices. They stay walkable in unsettled weather, and snow melts faster there than on exposed ridges. Look for valley-bottom itineraries rather than belvederes or ridge routes.
The Arve valley and its sun-lit terraces
The Arve valley offers a wide range of low and mid-altitude routes. In April, sunny terraces between 700 and 1,200 metres on south-facing slopes are often clear. Forest tracks and village-to-village paths are walkable from mid-April, sometimes earlier.
This is a sector that hikers tend to overlook at the start of the season. The mixed forests are beautiful when the beeches come into leaf, and you will have the trails mostly to yourself. One caveat: north-facing hollows and shaded sections stay damp and can be icy in the morning. Set out after 9 a.m. so the sun has had time to dry the path.
What to avoid in April
Anything above 1,500 to 1,800 metres is still risky in April, depending on aspect and that winter's snowfall. The main hazards:
- Transformed snow in the afternoon: firm in the morning, slushy by midday. Progress becomes exhausting and the risk of slipping rises sharply.
- Spring avalanches: the snowpack becomes unstable with warmth, even on slopes that look harmless.
- Deep mud at mid-altitude: the zone where snow gives way to bare earth turns into thick mud that wrecks trails and makes walking unpleasant.
- Black ice on rocky sections at higher elevations, invisible until you are standing on it.
Without crampons and an ice axe, stay below 1,400 metres in April. It is a simple rule, and it prevents a lot of accidents every spring.
Practical tips before you go
A few checks before you head out:
- Read the Météo France mountain snowpack bulletin for the area you are targeting to get an accurate snowline estimate.
- Check recent trip reports on hiking forums or contact local tourist offices, which often flag trails that are still closed or dangerous.
- Wear waterproof footwear even on easy walks: shaded sections and mid-altitude ground can be very wet.
- Start early to benefit from overnight frost that firms up higher paths, and aim to be back below the snow zone before 2 p.m.
- Pack extra layers: spring weather in the Alps changes fast, and afternoon thunderstorms can develop quickly over the massifs.
April is a great time to ease back into the mountains without rushing for the high summits. The low-altitude sectors around Lake Annecy, the valley floors of the Chablais, and the sunny terraces of the Arve valley already have plenty to offer. You will find early-season scenery with snow still capping the peaks, spring flowers coming through in the forests, and trails that will not be crowded until summer. Save the big routes for May or June: for now, the lower map has some real rewards waiting for you.