Grammont
📍 Valais , Monthey District · Nearest city: Tanay (2 km)
51 XC score / 100 · takeoff at 2147 m · 📍 View on map
Coordinates and external links
46.35750, 6.82110Forecast next days
Updated: 2026-05-02 16:22 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Not recommended for flying, cloud base ~191 m, wind 7 km/h, precipitation 4.7 mm.
base ~191m · wind 7 km/h · precip 4.7mmNot recommended for flying, cloud base ~331 m, wind 7 km/h, precipitation 6.0 mm.
base ~331m · wind 7 km/h · precip 6.0mmComposite 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.
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
🗓️ Best season to fly (2024 climatology)
Monthly climate score: historical avg of temp, wind, rain and cloud cover. Green = optimal month.
⭐ Best month: Aug (58/100, 16°C, 150mm lluvia) · Worst month: Mar (5/100, 165mm lluvia)
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 6 | Medium |
| Avg thermal probability | 0.75 | 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
large, grassy meadow
Nearby sites
Vionnaz Frassette Lieu-dit Pro-de-Chaud (56) · Vionnaz Turn (56) · Mayen (60) · Portes d Onne-1920 (61) · Pointe de Bellevue-2030 (43) · Crete des Champeys (57)