Marlens
📍 Rhone-Alpes , Departement de la Haute-Savoie · Nearest city: Faverges (5 km)
76 XC score / 100 · takeoff at 993 m · 📍 View on map
Coordinates and external links
45.77750, 6.33950Forecast next days
Updated: 2026-04-21 01:12 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~1184 m, wind 10 km/h.
base ~1184m · wind 10 km/hFlyable day, decent conditions, cloud base ~1243 m, wind 11 km/h.
base ~1243m · wind 11 km/hFlyable day, decent conditions, cloud base ~1665 m, wind 11 km/h.
base ~1665m · wind 11 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Wind chart — altitude × time
Color: green < 20 km/h · yellow 20-30 · red >40. Arrows point to where the wind is blowing. Each column = 1 hour. 4 altitudes: 10m surface, 80m first thermal, 1500m (850 hPa) thermal cruise, 3000m (700 hPa) top.
Wind next days (Open-Meteo model)
Wind rose 10m — 2026-04-21
| Date | Morning 08-12h | Midday 12-16h | Evening 16-20h | |||
|---|---|---|---|---|---|---|
| 2026-04-21 | 4 km/h S | gust 9 | 8 km/h SW | gust 12 | 4 km/h N | gust 15 |
| 2026-04-22 | 4 km/h SE | gust 14 | 10 km/h S | gust 21 | 8 km/h NW | gust 23 |
| 2026-04-23 | 3 km/h NW | gust 11 | 9 km/h NW | gust 22 | 8 km/h NW | gust 26 |
Colors: green < 15 km/h (optimal) · orange 15-25 · red >25 (flying not recommended). ⚠️ = shear >25 km/h between 10m and 850 hPa (potentially broken thermals).
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 9 | High |
| Avg thermal probability | 0.84 | Based on thousands of aggregated IGC flights |
| Solar orientation | 1.00 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Pilot comments
Rather small take off, 2 wings can take of at a time and not much place to prepare your wing when crowded.
Nearby sites
Atterrissage FFVL de Marlens (5) · Sulens (42) · Sambuy (5) · Sambuy 2 (5) · Le Méruz (76) · Atterrissage FFVL du Pré Biollay (5)