Measurements:
°C
°F
Mackinac Island
32°F
NW 6 mph
Feels like: 26°F
Precip: 0%
World Resorts USA Mackinac Island Weather

Mackinac Island Sea Water Temperature

Current Sea Water Temperature:
+31.2°F
Maximum Sea Water Temperature in April: 40.4°F
Minimum Sea Water Temperature in April: 30.2°F
Average water temperature in April: 34.0°F

Sea Water Temperature for the Last 10 Days:

April 12 31.2°F April 07 32.0°F
April 11 31.0°F April 06 31.6°F
April 10 30.2°F April 05 31.6°F
April 09 32.2°F April 04 31.6°F
April 08 32.0°F April 03 31.4°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

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
11
22
33
44
55
66
77
88
38.9
46.8
56.1
64.3
68.7
66.6
55.5
41.8
34
31.4
31.3
34

Sea Water Temperature in August

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
57
61
65
69
73
77
81

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
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
53
57
61
65
69
73
77
81

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
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
56
59
62
65
68
71
74
77

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 19.9 °F
January 21.2 °F
March 29.0 °F
The most rainy months:
August 3 days
July 3 days
May 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 +36
Chicago +48
Hawaii +78
Honolulu +78
Houston +68
Las Vegas +80
Los Angeles +64
Miami +76
New York +36
Orlando +70
San Diego +60
San Francisco +56
Sarasota +62
Tampa +66
Washington +46
24 Hours Weather Forecast
Mackinac Island
Local time: 00:53
13 apr, sunday
0300 32°F
N
6 mph
0600 34°F
N
5 mph
0900 34°F
N
7 mph
1200 38°F
N
9 mph
1500 40°F
NW
7 mph
1800 38°F
N
9 mph
2100 36°F
N
11 mph
14 apr, monday
0000 36°F
NW
11 mph