Current sea water temperature:
+32.4°F
| Minimum sea water temperature in February: | 34.7°F |
| Maximum sea water temperature in February: | 31.8°F |
| Average sea water temperature in February: | 33.0°F |
| more information | |
14 days
forecast
forecast
| Mackinac Island |
monthly
weather
weather
| Mackinac Island |
Sea water temperature for the last 10 days:
| February 26 | 32.4°F | February 21 | 32.0°F |
| February 25 | 32.4°F | February 20 | 32.2°F |
| February 24 | 32.4°F | February 19 | 32.2°F |
| February 23 | 32.2°F | February 18 | 32.0°F |
| February 22 | 32.2°F | February 17 | 32.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Mackinac Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Mackinac Island was noticed in August, July and September.
Monthly Sea Temperatures in Mackinac Island, °F
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.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 65.8°F. The highest and lowest sea temperatures during the month were 70.7°F and 59.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 61.9°F. The highest and lowest sea temperatures during the month were 67.1°F and 59.4°F.
current
weather
weather
| Mackinac Island |
weather in
March
March
| Mackinac Island |
Best time for vacation in Mackinac Island
Mackinac Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Mackinac Island
Local time: 14:47
February 26, thursday
1500
25°F
NE
9 mph
9 mph
1800
27°F
NE
9 mph
9 mph
2100
27°F
NE
9 mph
9 mph
February 27, friday
0000
28°F
NE
11 mph
11 mph
0300
23°F
E
7 mph
7 mph
0600
19°F
E
4 mph
4 mph
0900
23°F
N
4 mph
4 mph
1200
30°F
N
9 mph
9 mph
