Average sea water temperature in October:
+52.4°F
| Minimum sea water temperature in October: | 63.9°F |
| Maximum sea water temperature in October: | 45.0°F |
Daily sea water temperature in October, °F
Show year:
2026
2025
2024
The average sea water temperature in October of 2026 was 49.9°F. The highest and lowest sea temperatures during the month were 56.5°F and 46.6°F.
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| Grand Marais |
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Monthly sea water temperature in Grand Marais, °F
Which USA resorts have warmest sea in October?
| Place name | October 2026 | October 2025 |
|---|---|---|
| West Palm Beach | 84.6°F | 83.5°F |
| Fort Lauderdale | 84.5°F | 83.5°F |
| Miami Beach | 84.0°F | 83.4°F |
| Key West | 83.9°F | 83.8°F |
| Key Largo | 83.8°F | 83.0°F |
| Miami | 83.1°F | 82.7°F |
| Naples | 82.4°F | 81.9°F |
| Port St. Lucie | 82.3°F | 80.2°F |
| Kailua Kona | 82.0°F | 80.9°F |
| Corpus Christi | 81.4°F | 82.2°F |
| Siesta Key | 81.3°F | 80.4°F |
| Cape Coral | 81.1°F | 81.1°F |
| Sarasota | 81.0°F | 80.2°F |
| Honolulu | 80.6°F | 80.7°F |
| Hawaii | 80.5°F | 80.6°F |
| Cocoa Beach | 80.4°F | 79.2°F |
| Kauai | 80.3°F | 81.3°F |
| Galveston | 80.3°F | 80.8°F |
| Oahu | 80.1°F | 79.8°F |
| Houston | 80.1°F | 80.4°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: 12:28
October 29, thursday
1500
45°F
E
15 mph
15 mph
1800
43°F
SE
13 mph
13 mph
2100
41°F
SE
11 mph
11 mph
October 30, friday
0000
39°F
SE
8 mph
8 mph
0300
37°F
SE
6 mph
6 mph
0600
37°F
E
5 mph
5 mph
0900
37°F
SE
2 mph
2 mph
1200
45°F
NE
6 mph
6 mph
