Grefsenkollen
📍 Oslo · Nearest city: Oslo (6 km)
10 XC score / 100 · takeoff at 318 m · 📍 View on map
Coordinates and external links
59.95660, 10.80010Forecast next days
Updated: 2026-04-21 02:55 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Marginal conditions, cloud base ~1590 m, wind 11 km/h.
base ~1590m · wind 11 km/hMarginal conditions, cloud base ~1574 m, wind 10 km/h.
base ~1574m · wind 10 km/hMarginal conditions, cloud base ~1497 m, wind 14 km/h.
base ~1497m · wind 14 km/hComposite 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
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 0 | Low |
| Avg thermal probability | 0.00 | 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
Please take care on takeoff as there are some tree just below it. It is classified as for experienced pilots only. If you manage to land in a tree there, you can be seen all over Oslo, which makes a newspaper appearance probable
Rules and notes
max heigth is 900m
Nearby sites
Muselunden, Oslo. (5) · Aarvollbakke (Oslo) (18) · Voldsløkka bakketreningsområde Oslo (5) · Ekebergsletta (5) · Utsikten Kafe Oslo ved Sjømannskolen (5) · Midtstubakken, Oslo (5)