World Resorts USA Mackinac Island Weather

Mackinac Island 14 Days Forecast

14.08
fri
Day
70°F
SW 5 mph
Precip.
4%
Night
64°F
S 8 mph
Precip.
6%
15.08
sat
Day
72°F
NW 9 mph
Precip.
7%
Night
68°F
N 8 mph
Precip.
24%
16.08
sun
Day
66°F
SE 16 mph
Precip.
28%
Night
61°F
SE 11 mph
Precip.
9%
17.08
mon
Day
70°F
SE 6 mph
Precip.
3%
Night
66°F
N 9 mph
Precip.
6%
18.08
tue
Day
72°F
NE 20 mph
Precip.
14%
Night
61°F
SE 11 mph
Precip.
13%
19.08
wed
Day
66°F
E 3 mph
Precip.
3%
Night
63°F
N 9 mph
Precip.
5%
20.08
thu
Day
73°F
NE 9 mph
Precip.
5%
Night
70°F
N 7 mph
Precip.
12%
21.08
fri
Day
72°F
N 11 mph
Precip.
27%
Night
63°F
S 25 mph
Precip.
67%
22.08
sat
Day
64°F
S 10 mph
Precip.
2%
Night
59°F
SE 7 mph
Precip.
3%
23.08
sun
Day
68°F
NE 4 mph
Precip.
3%
Night
66°F
N 5 mph
Precip.
11%
24.08
mon
Day
75°F
NE 21 mph
Precip.
5%
Night
73°F
E 15 mph
Precip.
9%
25.08
tue
Day
70°F
SE 12 mph
Precip.
6%
Night
63°F
NW 6 mph
Precip.
5%
26.08
wed
Day
66°F
NE 6 mph
Precip.
11%
Night
57°F
SW 16 mph
Precip.
10%
27.08
thu
Day
61°F
W 14 mph
Precip.
2%
Night
59°F
NW 11 mph
Precip.
3%

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.4°F. The highest and lowest sea temperatures during the month were 72.3°F and 65.3°F.

Air temperature in Mackinac Island, °F

Precipitation total in Mackinac Island, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Mackinac Island

Sunniest months:
July 16 days
August 14 days
June 12 days
Warmest months:
August 69.4 °F
July 69.4 °F
September 62.9 °F
Warmest sea temp:
August 67.3 °F
July 65.3 °F
September 62.7 °F
Coldest months:
February 23.1 °F
January 23.4 °F
December 30.7 °F
Rainiest months:
August 3 days
April 2 days
July 2 days
Windiest months:
November 13.5 mph
December 13.2 mph
April 11.6 mph

Mackinac Island on a weather map

Current weather
03:13
Mackinac Island
+64°F
SE 5 mph
Feels like: +64°F
Precip.: 12%
Places in USA:
Name
°F
Boston
+68°F
Washington
+77°F
Hawaii
+79°F
Las Vegas
+82°F
Los Angeles
+68°F
Miami
+79°F
Maui
+73°F
Myrtle Beach
+79°F
New York
+72°F
San Diego
+68°F
San Francisco
+57°F
Santa Monica
+68°F
Sarasota
+79°F
Houston
+79°F
Chicago
+70°F
all places
24 Hours Forecast
Mackinac Island
Local time: 03:13
August 14, friday
0600
63°F
S
6 mph
0900
64°F
S
4 mph
1200
70°F
SW
5 mph
1500
73°F
W
3 mph
1800
73°F
SW
3 mph
2100
70°F
SW
7 mph
August 15, saturday
0000
64°F
S
8 mph
0300
63°F
W
4 mph
Units of measurement: °C / °F