Current sea water temperature:
+52.2°F
| Minimum sea water temperature in October: | 64.4°F |
| Maximum sea water temperature in October: | 46.8°F |
| Average sea water temperature in October: | 55.9°F |
| more information | |
14 days
forecast
forecast
| Mackinac Island |
monthly
weather
weather
| Mackinac Island |
Sea water temperature for the last 10 days:
| October 28 | 52.2°F | October 23 | 52.9°F |
| October 27 | 52.7°F | October 22 | 53.2°F |
| October 26 | 53.2°F | October 21 | 52.2°F |
| October 25 | 52.7°F | October 20 | 54.9°F |
| October 24 | 52.7°F | October 19 | 55.2°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 68.3°F. The highest and lowest sea temperatures during the month were 71.4°F and 63.9°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 66.8°F. The highest and lowest sea temperatures during the month were 70.9°F and 62.2°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 62.8°F. The highest and lowest sea temperatures during the month were 67.3°F and 57.6°F.
current
weather
weather
| Mackinac Island |
weather in
November
November
| 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: 13:25
October 29, thursday
1500
54°F
E
19 mph
19 mph
1800
48°F
SE
23 mph
23 mph
2100
46°F
SE
21 mph
21 mph
October 30, friday
0000
46°F
E
20 mph
20 mph
0300
46°F
SE
21 mph
21 mph
0600
46°F
SE
20 mph
20 mph
0900
45°F
SE
20 mph
20 mph
1200
46°F
SE
16 mph
16 mph
