The best time to see Bison Rut, Yellowstone in 2027 is Mid-July to August 2027.
Timing status: Natural timing window.
Wildlife rut · Mid-July to August 2027
Annual · summer
Two thousand pounds, bellowing.
In high summer the biggest wild bison herds in America converge on Hayden and Lamar Valleys, and the bulls spend August bellowing, wallowing, and facing off until the valleys disappear behind their dust. Watch from the car, at distance; they outrun tourists by a wide margin.
bison in the 2025 park estimate: ~5,300
Where it is visible: Hayden & Lamar Valleys, Yellowstone, USA
25-yard minimum distance rule; rut gorings happen most years. Expect bison jams on the Canyon road.
Bison Rut, Yellowstone 2027: Mid-July to August 2027.
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