Mackinac Island weather in September
Cool, with some rainy days. Average highs of 17°C and lows of 13°C, with around 10 rainy days expected throughout the month.
While September isn't our top-rated month for Mackinac Island, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
17°C
Average low
13°C
Rainy days
10 days
Best months to visit
Year-round
What to do in Mackinac Island in September
Whatever the weather, Mackinac Island rewards curious visitors. Here are some of the best ways to spend your time:
Horse-drawn carriage island tour: main street and bluff ride
Grand Hotel tour: 660-foot porch world's longest
Mackinac Island State Park hiking: Arch Rock and trails
Fudge shop visits and chocolate taffy purchase
Fort Mackinac historical site and museum visit
Lake exploration: kayaking and sailing options
What to pack for September
Layer up — a mid-weight jacket, jumpers, and comfortable trousers. Waterproof shoes are recommended. Scarves and gloves may be useful in the evenings.
Browse other months
January
-4C
Cold, with some rainy days.
February
-5C
Cold, with some rainy days.
March
-1C
Cold, with some rainy days.
April
3C
Cold, with some rainy days.
May
8C
Cold, with some rainy days.
June
15C
Cool, with occasional showers.
July
20C
Mild and comfortable, with occasional showers.
August
20C
Mild and comfortable, with occasional showers.
September (you are here)
17C
Cool, with some rainy days.
October
11C
Cool, with regular rainfall.
November
5C
Cold, with some rainy days.
December
0C
Cold, with some rainy days.
Book your September trip to Mackinac Island
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