Grands Montets
📍 Rhone-Alpes , Departement de la Haute-Savoie · Nearest city: Chamonix-Mont-Blanc (8 km)
58 XC score / 100 · takeoff at 3234 m · 📍 View on map
Coordinates and external links
45.94780, 6.96000Forecast next days
Updated: 2026-04-22 12:08 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~1569 m, wind 16 km/h.
base ~1569m · wind 16 km/hFlyable day, decent conditions, cloud base ~2397 m, wind 12 km/h.
base ~2397m · wind 12 km/hFlyable day, decent conditions, cloud base ~2186 m, wind 10 km/h.
base ~2186m · wind 10 km/hFlyable day, decent conditions, cloud base ~2058 m, wind 11 km/h.
base ~2058m · wind 11 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
🌬 Daily wind (next days)
Daily summary (10m wind). Full hour × altitude chart is being added progressively.
🗓️ Best season to fly (2024 climatology)
Monthly climate score: historical avg of temp, wind, rain and cloud cover. Green = optimal month.
⭐ Best month: Jul (68/100, 8°C, 68mm lluvia) · Worst month: Sep (5/100, 186mm lluvia)
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 6 | Medium |
| Avg thermal probability | 0.82 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.35 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
high altitude take off (3250m), which can be reached with a cable car. The take off is on a glacier be carefull with the crevasses.... it's better to go there with a mountain guide. JULY/ AUGUST: actual TO lies OUTSIDE no-fly zone, but route of flight has to be selected carefully ( > see pix!)
Rules and notes
>> July-August: be aware of no-fly-zone on south side of Chamonix (Mont Blanc -Aiguille du Midi)! (> see pix) >> LF R-30A active year round!! (> see pix!)
Pilot comments
one of the nicest flight of Chamonix
Nearby sites
Atterrissage FFVL Bois du Bouchet (5) · Flegere (65) · Chamonix - le savoy (5) · Plan Praz/ Brevent (Chamonix) (56) · Plan de l'Aiguille (Chamonix) (50) · Aiguille du Midi -S / N (61)