Spot Guide › Switzerland › Seedorf (UR) → Brunnen
Switzerland · 46.9013, 8.5936

Hazards
Long open-lake route rather than a shore session. Foehn can reach 8-10 Beaufort with 1-2 m short waves, abrupt gusts and rapid water-temperature drops; passenger vessels retain priority and the approved kite zones/shore rules do not make the route automatically legal: https://www.windsurfing-urnersee.ch/wissen/foehnsturm https://www.ur.ch/publikationen/7719
“When there is Föhn above 40 knots the föhn will blow through sisikon and you can ride till brunnen. Bumps are from isleten super clean, gets messy before sisikon and are getting better from sisikon till Brunnen. Check the Webcam in Sisikon or/and in Brunnen if the Wind blows through Requested-field batch 12 verified 2026-08-01: exact, nearby, route, area, operator and community-candidate relationships remain explicit; generic coordinate-only Surfline maps were removed where no meaningful report exists; unresolved items remain Unknown.”
— via Project7iii foildata; Requested-field research, last verified 2026-08-01
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