le Grand Bornand
📍 Rhone-Alpes , Departement de la Haute-Savoie · Nearest city: Le Grand-Bornand (3 km)
56 XC score / 100 · takeoff at 2017 m · 📍 View on map
Coordinates and external links
45.95870, 6.47630Forecast next days
Updated: 2026-04-19 16:12 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día muy favorable para XC, base de cúmulos ~529 m, viento 10 km/h.
base ~529m · wind 10 km/hDía volable, condiciones decentes, base de cúmulos ~881 m, viento 11 km/h.
base ~881m · wind 11 km/hDía muy favorable para XC, base de cúmulos ~1304 m, viento 12 km/h.
base ~1304m · wind 12 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-20❌ Not recommended · peak 55 at 20h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (100/100) — base bajo freezing con CU
| 08 50 | 09 50 | 10 50 | 11 50 ☁️⚠️ | 12 50 ☁️⚠️ | 13 50 ☁️⚠️ | 14 40 ☁️⚠️ | 15 40 ☁️⚠️ | 16 45 ☁️⚠️ | 17 50 ☁️⚠️ | 18 50 ☁️⚠️ | 19 50 ☁️⚠️ | 20 55 ☁️⚠️ |
Peak 20h: CAPE 10 J/kg · LI 1.9 · BL top 10 m · w* 0.0 m/s · cloud base 2504 m · 0°C at 2490 m · Pro score 44/100
2026-04-21⚠️ Marginal · peak 55 at 11h
- Cloud suck alto (100/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 30 ☁️⚠️ | 10 50 ☁️⚠️ | 11 55 ☁️⚠️ | 12 55 ☁️⚠️ | 13 45 ☁️⚠️ | 14 45 ☁️⚠️ | 15 45 ☁️⚠️ | 16 30 ☁️⚠️ | 17 40 ☁️⚠️ | 18 30 ☁️⚠️ | 19 30 ☁️⚠️ | 20 35 ☁️⚠️ |
Peak 11h: CAPE 0 J/kg · LI 2.1 · BL top 720 m · w* 0.0 m/s · cloud base 2942 m · 0°C at 2490 m · Pro score 66/100 · sun 39° over slope
Hourly flyability (0–100). ⛈️ = storm risk · ☁️⚠️ = cloud suck · 🏔️ = active ridge lift. CAPE = convective energy, LI = stability, BL top = thermal ceiling, w* = estimated dry thermal velocity. Source: Open-Meteo (ECMWF/GFS/ICON blend model).
Estimated vertical profile (Sounding)
Reference time: 20:00 (peak of the day)
Surface T: 3.9°C · Td: 0.0°C
LCL (cloud base): 487 m
BL top: 10 m
0°C level: 2490 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 11 | High |
| Avg thermal probability | 0.79 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.25 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
at the very top of the ski resort. the chairlift can bring you up there from the 'Grand Bornand' village. Grass field, but steep slope (don't drop your helmet !) more info here: http://en.legrandbornand.com/paragliding-take-off-area-le-lachat.html
Pilot comments
Amazing landscape from up there and a lot of flying to do : xcountry around the aravis valley, but also to Annecy, Chamonix, etc. Highly recommended place to go !
Nearby sites
Col de la Colombiere (60) · La Clusaz (54) · La Clusaz - Crêt du Loup (54) · brizon (45) · Solaison (45) · Cordon - Plateau des Benets (46)