Tour du Mont Viso conditions

Last updated . Satellite imagery from 30 October 2026 to 8 November 2026.

Tour du Mont Viso: 14% snow-free as of 8 November 2026; snow on Col de la Traversette, Col du Viso and Passo Gallarino and 2 more cols.

  • 14% of the line snow-free
  • 37.8 km still under snow
  • Snow line: 1,800 m
  • −76 points on last week.

The Tour du Mont Viso usually opens early July, once the high cols melt out and the huts open.

This year the line was first 95% snow-free on 4 July 2026, and autumn snow returned by 10 October 2026.

The latest satellite reading, from 8 November 2026, shows 14% snow-free.

Sentinel-2 satellite imagery from 30 October – 8 November 2026 shows 14% of the Tour du Mont Viso line clear of snow, with about 38 km still under snow.

That is 76 points less snow-free than the week before, so fresh snow has fallen.

The snow line sits at about 1,800 m.

More snow than the same week in 2025, when the route was 57% snow-free.

What it means: Most of the route is under snow from about 1,800 m. Treat the high cols as winter terrain: crampons and an ice axe, the skills to use them, and a check with the huts before you commit.

Cols

ColHeightStageSnow
Col de la Traversette2,947 m2Under snow
Col du Viso2,650 m2Under snow
Passo Gallarino2,727 m3Under snow
Passo San Chiaffredo2,764 m3Under snow
Col de Valante2,815 m4Under snow

Stage by stage

StageSnow-freeUnder snowLowest snow
1. Roche Écroulée to Refuge du Viso40%4.2 km2,000 m
2. Refuge du Viso to Quintino Sella0%13 km2,200 m
3. Quintino Sella to Refuge Vallante0%12.6 km1,950 m
4. Refuge Vallante to Roche Écroulée30%8 km2,000 m

Season by season

YearFirst 95% snow-freeAutumn snow backBest reading
20264 July10 October100% snow-free
20256 July24 October100% snow-free

Update log

  1. : 14% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  2. : 90% snow-free. Snow on Passo San Chiaffredo, Col de Valante.
  3. : 68% snow-free, snow line about 2,350 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  4. : 77% snow-free, snow line about 2,400 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  5. : 37% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  6. : 100% snow-free.
  7. : 100% snow-free.
  8. : 100% snow-free.
  9. : 100% snow-free.
  10. : 100% snow-free.
  11. : 100% snow-free.
  12. : 100% snow-free.
  13. : 100% snow-free.
  14. : 100% snow-free.
  15. : 100% snow-free.
  16. : 100% snow-free.
  17. : 100% snow-free.
  18. : 100% snow-free.
  19. : 98% snow-free.
  20. : 94% snow-free. Snow on Col du Viso, Col de Valante.
  21. : 90% snow-free. Snow on Col du Viso, Col de Valante.
  22. : 86% snow-free, snow line about 2,800 m. Snow on Col de la Traversette, Col du Viso, Col de Valante.
  23. : 82% snow-free, snow line about 2,500 m. Snow on Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  24. : 67% snow-free, snow line about 2,200 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  25. : 60% snow-free, snow line about 2,050 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  26. : 50% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  27. : 35% snow-free, snow line about 1,900 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  28. : 43% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  29. : 57% snow-free, snow line about 2,000 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  30. : 19% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  31. : 67% snow-free. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo.
  32. : 100% snow-free.
  33. : 100% snow-free.
  34. : 100% snow-free.
  35. : 87% snow-free, snow line about 2,750 m. Snow on Col de la Traversette, Passo San Chiaffredo.
  36. : 100% snow-free.
  37. : 100% snow-free.
  38. : 100% snow-free.
  39. : 100% snow-free.
  40. : 100% snow-free.
  41. : 100% snow-free.
  42. : 100% snow-free.
  43. : 100% snow-free.
  44. : 100% snow-free.
  45. : 100% snow-free.
  46. : 99% snow-free.
  47. : 99% snow-free. Snow on Col de Valante.
  48. : 93% snow-free. Snow on Col de Valante.
  49. : 92% snow-free, snow line about 2,800 m. Snow on Col de la Traversette, Col de Valante.
  50. : 76% snow-free, snow line about 2,450 m. Snow on Col de la Traversette, Col du Viso, Passo San Chiaffredo, Col de Valante.
  51. : 57% snow-free, snow line about 2,000 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  52. : 52% snow-free, snow line about 1,900 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  53. : 44% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  54. : 40% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.
  55. : 23% snow-free, snow line about 1,800 m. Snow on Col de la Traversette, Col du Viso, Passo Gallarino, Passo San Chiaffredo, Col de Valante.

How this is measured

The route is sampled every 200 m along the classic stages. Each point uses its most recent cloud-free satellite view from the 10 days before the update.

A point counts as snow when Sentinel-2 classifies it as snow or its snow index (NDSI) is high. Cloud, shadow and no-data pixels are left out.

Imagery: Copernicus Sentinel-2 L2A (Earth Search STAC), 20 m. Elevation: Mapbox Terrain-DEM v1 (zoom 12).

Satellite snow cover is a planning aid, not a safety verdict. It cannot see snow under trees or thin new snow, and it says nothing about avalanche danger, cornices or ice. Check with huts, guides and local bulletins before you go.

Tour du Mont Viso route guide · Conditions on every route