Average sea water temperature in May:
+36.3°F
| Minimum sea water temperature in May: | 40.1°F |
| Maximum sea water temperature in May: | 32.7°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 35.4°F. The highest and lowest sea temperatures during the month were 39.4°F and 33.8°F.
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| Grand Marais |
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| Grand Marais |
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| Grand Marais |
14 days
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| Grand Marais |
Monthly sea water temperature in Grand Marais, °F
Which USA resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Key West | 84.3°F | 83.5°F |
| Miami | 83.3°F | 82.6°F |
| Naples | 82.9°F | 83.5°F |
| Miami Beach | 82.7°F | 82.4°F |
| Tampa | 81.9°F | 82.7°F |
| West Palm Beach | 81.7°F | 81.1°F |
| Clearwater Beach | 81.5°F | 82.6°F |
| Sarasota | 81.5°F | 82.7°F |
| Cocoa Beach | 80.4°F | 79.4°F |
| Orlando | 78.4°F | 77.2°F |
| Houston | 78.4°F | 79.5°F |
| Daytona Beach | 78.1°F | 76.0°F |
| New Orleans | 78.0°F | 79.5°F |
| Honolulu | 78.0°F | 78.1°F |
| Hawaii | 77.9°F | 78.0°F |
| St. George Island | 77.8°F | 79.2°F |
| Maui | 77.0°F | 77.5°F |
| Panama City Beach | 76.8°F | 79.0°F |
| St. Augustine | 76.7°F | 76.9°F |
| Santa Rosa Beach | 76.4°F | 78.8°F |
Best time for vacation in Grand Marais
Grand Marais on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Grand Marais
Local time: 04:43
August 14, friday
0600
55°F
SW
6 mph
6 mph
0900
64°F
W
9 mph
9 mph
1200
66°F
W
9 mph
9 mph
1500
66°F
W
9 mph
9 mph
1800
64°F
W
9 mph
9 mph
2100
57°F
SW
7 mph
7 mph
August 15, saturday
0000
57°F
SW
9 mph
9 mph
0300
59°F
SW
9 mph
9 mph
