When Is Leprechaun Day 2025. Leprechaun day is all about celebrating the history of these mischievous irish faeries. The day is about irelands little folks, who also are celebrated on saint patrick's day each year.

The legend of leprechauns dates back centuries in irish folklore. Leprechaun day is a holiday that is observed annually on may 13th and celebrates the small supernatural beings that walked right out of irish folklore.