Asagiri -DK Skygym
📍 Yamanashi · Nearest city: Fujikawaguchiko (14 km)
68 XC score / 100 · takeoff at 1132 m · 📍 View on map
Coordinates and external links
35.41290, 138.57000Forecast next days
Updated: 2026-04-21 01:13 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~2156 m, wind 10 km/h.
base ~2156m · wind 10 km/hMarginal conditions, cloud base ~588 m, wind 14 km/h.
base ~588m · wind 14 km/hNot recommended for flying, cloud base ~730 m, wind 10 km/h, precipitation 12.7 mm.
base ~730m · wind 10 km/h · precip 12.7mmComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21⚠️ Marginal · peak 50 at 11h
- Cloud cover >85% — no radiation to trigger thermals
⏰ Useful window: 11:00 – 16:00
| 08 20 | 09 20 | 10 35 | 11 50 | 12 45 | 13 45 | 14 45 ☁️⚠️ | 15 45 ☁️⚠️ | 16 35 ☁️⚠️ | 17 30 ☁️⚠️ | 18 30 ☁️⚠️ | 19 30 ☁️⚠️ | 20 30 ☁️⚠️ |
Peak 11h: CAPE 110 J/kg · LI 8.3 · BL top 450 m · w* 5.7 m/s · cloud base 1894 m · 0°C at 3080 m · Pro score 76/100 · sun 49° 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: 11:00 (peak of the day)
Surface T: 14.6°C · Td: 8.5°C
LCL (cloud base): 762 m
BL top: 450 m
0°C level: 3080 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
Wind chart — altitude × time
Color: green < 20 km/h · yellow 20-30 · red >40. Arrows point to where the wind is blowing. Each column = 1 hour. 4 altitudes: 10m surface, 80m first thermal, 1500m (850 hPa) thermal cruise, 3000m (700 hPa) top.
Wind next days (Open-Meteo model)
Wind rose 10m — 2026-04-21
| Date | Morning 08-12h | Midday 12-16h | Evening 16-20h | |||
|---|---|---|---|---|---|---|
| 2026-04-21 | 7 km/h NW | gust 35 | 9 km/h NW | gust 24 | 6 km/h N | gust 28 |
Colors: green < 15 km/h (optimal) · orange 15-25 · red >25 (flying not recommended). ⚠️ = shear >25 km/h between 10m and 850 hPa (potentially broken thermals).
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 7 | Medium |
| Avg thermal probability | 0.87 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.78 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
Training hill (pyramid) allows training with all wind directions ;-)
Pilot comments
This is a thermic site best in a southerly as there is a restricted flying zone to the west, the mountain range extends nortwards for approximately one hundred kilometers. It offers flying all year round. Excellent views of Mt.Fuji!
Nearby sites
Asagiri Inogashira (Wingkiss) (69) · Kawagutiko (60) · Matsuda_Yamazaki (57) · Ōshika-mura (30) · Area Tanzawa (46) · Area Tanzawa (45)