- Wiarton is not a city, but rather a small community located in the Bruce Peninsula region of Ontario, Canada. It falls under the municipality of South Bruce Peninsula. Wiarton is best known for its annual Wiarton Willie Festival, which celebrates the arrival of spring and predicts the weather based on the predictions of a local groundhog named Wiarton Willie. The town is also a popular tourist destination with its beautiful natural landscapes, hiking trails, and proximity to the Bruce Peninsula National Park and the scenic Georgian Bay.