Average sea water temperature in May:
+42.8°F
| Minimum sea water temperature in May: | 52.5°F |
| Maximum sea water temperature in May: | 36.1°F |
Daily sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 43.7°F. The highest and lowest sea temperatures during the month were 50.0°F and 37.8°F.
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| Mackinac Island |
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| Mackinac Island |
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| Mackinac Island |
14 days
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| Mackinac Island |
Monthly sea water temperature in Mackinac Island, °F
Which USA resorts have warmest sea in May?
| Place name | May 2025 | May 2024 |
|---|---|---|
| Everglades | 84.5°F | 84.6°F |
| Islamorada | 83.6°F | 84.4°F |
| Key West | 83.5°F | 84.6°F |
| Naples | 83.5°F | 83.8°F |
| Marco Island | 83.5°F | 84.0°F |
| Key Largo | 83.5°F | 84.1°F |
| Cape Coral | 83.4°F | 83.6°F |
| Sanibel Island | 83.1°F | 83.2°F |
| Sarasota | 82.7°F | 82.9°F |
| Tampa | 82.7°F | 82.5°F |
| St. Petersburg | 82.6°F | 82.4°F |
| Clearwater Beach | 82.6°F | 82.5°F |
| Miami | 82.6°F | 83.3°F |
| Siesta Key | 82.5°F | 82.6°F |
| Miami Beach | 82.4°F | 83.0°F |
| Fort Lauderdale | 81.1°F | 81.7°F |
| West Palm Beach | 81.1°F | 81.5°F |
| Corpus Christi | 80.9°F | 81.0°F |
| Pensacola | 80.1°F | 79.4°F |
| South Padre Island | 80.0°F | 81.1°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: 16:12
December 24, wednesday
1800
30°F
NW
4 mph
4 mph
2100
32°F
NW
5 mph
5 mph
December 25, thursday
0000
32°F
NE
4 mph
4 mph
0300
34°F
SE
9 mph
9 mph
0600
34°F
SE
14 mph
14 mph
0900
32°F
S
20 mph
20 mph
1200
30°F
S
16 mph
16 mph
1500
27°F
SW
9 mph
9 mph
