Average sea water temperature in September:
+62.7°F
| Minimum sea water temperature in September: | 68.9°F |
| Maximum sea water temperature in September: | 55.9°F |
Daily 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.
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temperature
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| Mackinac Island |
monthly
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| Mackinac Island |
current
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| Mackinac Island |
14 days
forecast
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| Mackinac Island |
Monthly sea water temperature in Mackinac Island, °F
Which USA resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Key West | 86.9°F | 87.4°F |
| West Palm Beach | 86.2°F | 86.4°F |
| Miami Beach | 86.1°F | 86.3°F |
| Naples | 86.1°F | 87.2°F |
| Miami | 85.8°F | 86.0°F |
| Houston | 84.9°F | 83.4°F |
| Sarasota | 84.8°F | 86.7°F |
| Cocoa Beach | 84.6°F | 85.2°F |
| Tampa | 84.3°F | 86.0°F |
| New Orleans | 84.3°F | 82.9°F |
| Clearwater Beach | 84.0°F | 86.2°F |
| Pensacola Beach | 83.9°F | 84.5°F |
| St. George Island | 83.5°F | 84.0°F |
| Panama City Beach | 83.4°F | 84.8°F |
| Santa Rosa Beach | 83.4°F | 84.8°F |
| Fort Walton Beach | 83.3°F | 84.5°F |
| Destin | 83.1°F | 84.5°F |
| Orlando | 82.8°F | 83.6°F |
| Daytona Beach | 82.7°F | 83.2°F |
| St. Augustine | 81.8°F | 82.7°F |
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: 03:50
August 14, friday
0600
63°F
S
6 mph
6 mph
0900
64°F
S
4 mph
4 mph
1200
70°F
SW
5 mph
5 mph
1500
73°F
W
3 mph
3 mph
1800
73°F
SW
3 mph
3 mph
2100
70°F
SW
7 mph
7 mph
August 15, saturday
0000
64°F
S
8 mph
8 mph
0300
63°F
W
4 mph
4 mph
