What is the weather like in August on Mackinac Island?


Mackinac Island enjoys a mild spring, temperate summer and crisp fall temperatures. Since the island is located in the middle of the Straits of Mackinac, weather can be unpredictable. Remember to pack layers and don’t forget your walking shoes.

Check the current Mackinac Island weather forecast here.

Mackinac Island Average Temperatures

Month May June July Aug Sept Oct
High/Low (F°) 60/43 69/53 75/60 74/60 66/52 54/42