About Yellowstone Lake Windsurf Spot
Yellowstone Lake's Bridge Bay Marina launches windsurfers to fetch 20-knot afternoon gusts across 141 square miles of alpine water. Class II waves form on Sedge Bay shoals; 2-hour sail from dock. NPS requires boating permit; lake freezes to 4ft, thaws June. Depths plummet to 400ft; surface 45F. Ideal for 5.0m sails per REI forecasts.
Safety Considerations
Capsize in 44F water mandates drysuits; 30-min hypothermia window. Wolves, bears shore-side; secure gear. Storms build fast; reef early. No swimming per cold shock advisory. AIS transponders mandatory for rentals. Leave No Trace on beaches.
Essential Gear
Starboard SUP board, NeilPryde sail, Mustang drysuit.
Emergency Tips
Deploy dye marker; paddle to Mary Bay shore 1 mile.