When Does Mackinac Island Close 2024 Dates. Some attractions and the maximum hours of things being open is from late may until late august. The island is always open to tourism, but the main season is may through october.
Mackinac island is mostly a spring, summer and fall destination with the primary visitor season running from may through october. The mackinac island bridge walk is scheduled for september 2, 2024, from 7 a.m.