Measurements:
°C
°F
Mackinac Island
54°F
SW 1 mph
Feels like: 54°F
Precip: 0%
World Resorts USA Mackinac Island Weather

Mackinac Island Sea Water Temperature

Current Sea Water Temperature:
+48.8°F
Maximum Sea Water Temperature in November: 55.6°F
Minimum Sea Water Temperature in November: 39.2°F
Average water temperature in November: 46.7°F

Sea Water Temperature for the Last 10 Days:

November 05 48.8°F October 31 50.8°F
November 04 49.4°F October 30 50.6°F
November 03 50.4°F October 29 51.4°F
November 02 51.0°F October 28 52.2°F
November 01 51.2°F October 27 52.8°F

When is the Warmest Sea for Mackinac Island?

According to our data for the last three years for Mackinac Island the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2024 2023 2022

The average sea surface temperature in August 2024 for Mackinac Island was 70.2°F. The maximum and minimum values were 65.8°F and 75.8°F respectively.

Sea Water Temperature in July

Select Year: 2024 2023 2022

The average sea surface temperature in July 2024 for Mackinac Island was 67.2°F. The maximum and minimum values were 58.2°F and 74.2°F respectively.

Sea Water Temperature in September

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Mackinac Island was 66.1°F. The maximum and minimum values were 63.4°F and 67.8°F respectively.

Best Time to Visit Mackinac Island
The most sunny months:
July 15 days
August 15 days
September 13 days
The most warm months:
August 71.9 °F
July 71.8 °F
September 64.8 °F
Warmest sea temperature:
August 68.8 °F
July 66.6 °F
September 64.3 °F
The most cold months:
February 20.1 °F
January 21.8 °F
March 29.2 °F
The most rainy months:
August 3 days
July 3 days
March 2 days
The most windy months:
November 13 mph
December 12 mph
April 11 mph

Mackinac Island on the Weather Map

USA Resorts:
NAME
Boston +56
Chicago +64
Hawaii +80
Honolulu +80
Houston +80
Las Vegas +44
Los Angeles +62
Maui +74
Miami +84
New York +62
San Diego +52
San Francisco +56
Sarasota +76
Tampa +78
Washington +62
24 Hours Weather Forecast
Mackinac Island
Local time: 07:46
05 nov, tuesday
0900 54°F
SW
1 mph
1200 54°F
S
7 mph
1500 52°F
N
6 mph
1800 54°F
NE
19 mph
2100 56°F
NE
17 mph
06 nov, wednesday
0000 56°F
NE
17 mph
0300 50°F
NE
19 mph
0600 48°F
SE
13 mph