MI · Midwest & Great Plains · 2026 exact answer
Park entirely closed November 1 at Isle Royale: what applies in 2026?
Direct answer
Park entirely closed November 1 - April 15 (2026 season: April 16 - October 31)
Exact conditions
- Status
- Not required; the stated access rule still applies
- Applies to
- all visitors
- Place or corridor
- Entire island; the closure extends 4.5 miles out into Lake Superior from the island
- Effective dates
- November 1, 2026 through April 15, 2027
- Release model
- first come
Exceptions and limits
- Park headquarters in Houghton, MI remains the winter administrative office, but the Houghton Visitor Center itself is closed November 1 - April 14.
Official source
National Park Service · reviewed August 27, 2026
Isle Royale National Park is open every year from April 16 through October 31. The island is closed from November 1 through April 15 due to extreme winter weather conditions and for the safety and protection of visitors. This closure extends 4.5 miles out into Lake Superior from the island.
Operating Hours & Seasons - Isle Royale National Park (U.S. National Park Service)