Average sea water temperature in January:
+73.1°F
| Minimum sea water temperature in January: | 78.8°F |
| Maximum sea water temperature in January: | 66.0°F |
Daily sea water temperature in January, °F
Show year:
2026
2025
2024
The average sea water temperature in January of 2026 was 72.5°F. The highest and lowest sea temperatures during the month were 75.4°F and 68.7°F.
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Monthly sea water temperature in Key West, °F
Which USA resorts have warmest sea in January?
| Place name | January 2026 | January 2025 |
|---|---|---|
| Hilo | 77.3°F | 77.2°F |
| Honolulu | 77.2°F | 77.6°F |
| Hawaii | 77.2°F | 77.5°F |
| Maui | 77.0°F | 76.9°F |
| Kauai | 77.0°F | 75.0°F |
| West Palm Beach | 76.6°F | 75.5°F |
| Oahu | 76.1°F | 76.5°F |
| Fort Lauderdale | 75.9°F | 75.1°F |
| Miami Beach | 74.0°F | 73.1°F |
| Key West | 72.5°F | 70.3°F |
| Hialeah | 72.4°F | 71.8°F |
| Key Largo | 71.7°F | 71.1°F |
| Miami | 71.2°F | 70.7°F |
| Everglades | 70.8°F | 68.6°F |
| Marco Island | 68.2°F | 65.2°F |
| Naples | 67.7°F | 64.7°F |
| Cape Coral | 67.3°F | 64.3°F |
| Cocoa Beach | 66.9°F | 60.9°F |
| Siesta Key | 65.0°F | 61.5°F |
| Sarasota | 65.0°F | 61.2°F |
Best time for vacation in Key West
Key West on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Key West
Local time: 18:44
May 16, saturday
2100
82°F
W
15 mph
15 mph
May 17, sunday
0000
82°F
W
17 mph
17 mph
0300
82°F
NW
16 mph
16 mph
0600
81°F
W
13 mph
13 mph
0900
82°F
W
16 mph
16 mph
1200
82°F
W
17 mph
17 mph
1500
82°F
W
16 mph
16 mph
1800
82°F
W
18 mph
18 mph
