Mackinac Island weather in August
Mild and comfortable, with occasional showers. Average highs of 20°C and lows of 16°C, with around 8 rainy days expected throughout the month.
While August 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
20°C
Average low
16°C
Rainy days
8 days
Best months to visit
Year-round
What to do in Mackinac Island in August
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 August
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
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 (you are here)
20C
Mild and comfortable, with occasional showers.
September
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 August trip to Mackinac Island
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