Grindelwald - First
📍 Bern , Interlaken-Oberhasli District · Nearest city: Grindelwald (4 km)
56 XC score / 100 · takeoff at 2111 m · 📍 View on map
Coordinates and external links
46.65710, 8.05527Forecast next days
Updated: 2026-04-21 01:25 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~608 m, wind 13 km/h.
base ~608m · wind 13 km/hFlyable day, decent conditions, cloud base ~1534 m, wind 9 km/h.
base ~1534m · wind 9 km/hFlyable day, decent conditions, cloud base ~2644 m, wind 8 km/h.
base ~2644m · wind 8 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21❌ Not recommended · peak 60 at 14h
- Cloud cover >85% — no radiation to trigger thermals
- High cloud suck (100/100) — base below freezing with CU
| 08 30 ☁️⚠️ | 09 50 ☁️⚠️ | 10 50 ☁️⚠️ | 11 50 ☁️⚠️ | 12 55 ☁️⚠️ | 13 55 ☁️⚠️ | 14 60 ☁️⚠️ | 15 45 ☁️⚠️ | 16 55 ☁️⚠️ | 17 55 ☁️⚠️ | 18 55 ☁️⚠️ | 19 40 ☁️⚠️ | 20 40 ☁️⚠️ |
Peak 14h: CAPE 10 J/kg · LI 0.3 · BL top 1730 m · w* 0.0 m/s · cloud base 3323 m · 0°C at 2300 m · Pro score 63/100 · sun 35° 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: 14:00 (peak of the day)
Surface T: 3.0°C · Td: -6.7°C
LCL (cloud base): 1212 m
BL top: 1730 m
0°C level: 2300 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) | 6 | Medium |
| Avg thermal probability | 0.87 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.31 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
huge TO area, suited for all levels; easy access by gondola from Grindelwald, TOP-landing also possible...
Rules and notes
TO and large part of flying area lies within LS-R6 (Axalp); info if active can be found on the DABS: http://www.skyguide.ch/de/nc/services/aim-services/dabs/ Airspaces in Switzerland are a tough subject, get all the info you can get before flying: http://www.flyland.ch. Download of area info (as PDF): https://www.shv-fsvl.ch/en/fluggebiete-sicherheit/fluggebiete/fluggebiete/ > Bern > Interlaken and > Bern > Sonderregelung LS-R6
Pilot comments
magnificent views! Sometimes (afternoon during summer) it is possible to soar up the N face of the Eiger mtn. Gondola-Tickets: (with Swiss 'half-prize-abonnement' 50%: off!). Day-passes available (if you intend to fly more than twice) and also 2-day-passes .
Nearby sites
Waldspitz (47) · Bodmi (5) · Pfingstegg (47) · Bäregg (5) · Landeplatz Grund (5) · Axalp Restaurant Hilten North (5)