When Does Shamrock Shake Come Out 2025. Mcdonald's shamrock shake officially has a release date for 2025. Uncle o'grimacey debuted in 1975, five years after the shamrock shake first hit the mcdonald's menu.

Mcdonald’s beloved shamrock shake is rolling back out on menus nationwide now for a limited time. It’s the second year in a row it will debut on that day,.