Arosa - Hoernli / Hörnli
📍 Grisons , Plessur District · Nearest city: Arosa (4 km)
54 XC score / 100 · takeoff at 2480 m · 📍 View on map
Coordinates and external links
46.76680, 9.62017Forecast next days
Updated: 2026-04-21 01:26 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~522 m, wind 16 km/h.
base ~522m · wind 16 km/hFlyable day, decent conditions, cloud base ~1062 m, wind 15 km/h.
base ~1062m · wind 15 km/hFlyable day, decent conditions, cloud base ~1269 m, wind 14 km/h.
base ~1269m · wind 14 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21⚠️ Marginal · peak 68 at 16h
- High cloud suck (97/100) — base below freezing with CU
⏰ Useful window: 16:00 – 17:00
| 08 25 ☁️⚠️ | 09 25 ☁️⚠️ | 10 45 ☁️⚠️ | 11 40 ☁️⚠️ | 12 55 ☁️⚠️ | 13 60 ☁️⚠️ | 14 60 ☁️⚠️ | 15 60 ☁️⚠️ | 16 68 ☁️⚠️ | 17 60 ☁️⚠️ | 18 60 ☁️⚠️ | 19 60 ☁️⚠️ | 20 55 ☁️⚠️ |
Peak 16h: CAPE 90 J/kg · LI -0.1 · BL top 1420 m · w* 8.0 m/s · cloud base 3342 m · 0°C at 1900 m · Pro score 58/100 · sun 24° 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: 16:00 (peak of the day)
Surface T: 3.3°C · Td: -3.6°C
LCL (cloud base): 862 m
BL top: 1420 m
0°C level: 1900 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
🌬 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
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 5 | Medium |
| Avg thermal probability | 0.77 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.38 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Upcoming competitions in this country
- PWCA Italy Gemona 2026 · 2026-07-25 – 2026-08-01 · PWCA
Copa del Mundo en Gemona del Friuli, Italia
Rules and notes
Airspaces in Switzerland are a tough subject, get all the info you can get before flying. More info on http://www.flyland.ch.
Pilot comments
Extremely rarely used, as no 'access' to thermals/ XC! >> use Arosa-Weisshorn instead! http://www.paraglidingearth.com/en-html/index.php?site=8245
Nearby sites
Urdenfürkli / Urdenfürggli (47) · Arosa -Weisshorn (59) · Parpaner Rothorn -2800 (54) · Arosa -Brueggerhorn (54) · Scharmoin (40) · Guergaletsch -2400 (30)