Chalais
📍 Rhone-Alpes , Departement de l'Isere · Nearest city: Voreppe (2 km)
55 XC score / 100 · takeoff at 1003 m · 📍 View on map
Coordinates and external links
45.29240, 5.66170Forecast next days
Updated: 2026-05-02 16:13 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Not recommended for flying, cloud base ~318 m, wind 18 km/h, precipitation 8.9 mm.
base ~318m · wind 18 km/h · precip 8.9mmNot recommended for flying, cloud base ~227 m, wind 8 km/h, precipitation 15.1 mm.
base ~227m · wind 8 km/h · precip 15.1mmComposite 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: Jul (88/100, 23°C, 80mm lluvia) · Worst month: Jan (20/100, 101mm lluvia)
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 8 | High |
| Avg thermal probability | 0.83 | 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
20 mn by feet from Chalais, 5 km east of Voreppe, 15 km NW from Grenoble. Easy take off! Landing not visible from take off. Take care about thermal wind in valley : morning site !
Nearby sites
Le Grand Ratz (54) · La Grande Sure (56) · petit Montaud (44) · Montaud (42) · Charmant Som (47) · Charande-la moliere (50)