As more seasonal residents and workers return to Mackinac Island for the start of the 2026 season, local officials are urging everyone heading onto the water to take extra precautions.

In a joint water safety announcement shared this week, the Mackinac Island Recreation Department and Mackinac Marine Rescue reminded the community that surrounding Lake Huron waters remain dangerously cold, currently hovering around 45 degrees.

“Practicing water safety around Mackinac Island is critical,” the announcement stated.

Officials emphasized that wearing a properly fitted personal flotation device (PFD), commonly known as a life jacket, dramatically increases survival chances in cold water emergencies. The advisory also warns that even experienced swimmers can quickly become overwhelmed by cold, unpredictable conditions and hidden underwater hazards.

The notice highlights that many drownings occur when life jackets are not worn.

The organizations also cautioned residents and visitors about the rapid onset of hypothermia, which can affect individuals faster than expected, even during mild spring weather. Symptoms may include excessive shivering, slowed breathing, mumbled speech, confusion, drowsiness, and eventually the inability to swim.

According to the advisory, water temperatures around Mackinac Island can remain in the high 30s during early May and typically only reach the high 60s by late August. In deeper waters, temperatures can stay near 45 degrees year-round.

Before heading onto the water, officials recommend:

The message ends with a simple reminder to the community: “If you are unsure, do not go.”

As boating, kayaking, paddleboarding, and other water activities begin ramping up for the season, local officials encourage everyone to stay alert and prioritize safety on the Straits.