Average sea water temperature in January:
+73.2°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 73.6°F. The highest and lowest sea temperatures during the month were 75.4°F and 71.6°F.
sea water
temperature
temperature
| Key West |
monthly
weather
weather
| Key West |
current
weather
weather
| Key West |
14 days
forecast
forecast
| Key West |
Monthly sea water temperature in Key West, °F
Which USA resorts have warmest sea in January?
| Place name | January 2026 | January 2025 |
|---|---|---|
| Kailua Kona | 78.7°F | 78.2°F |
| Honolulu | 77.8°F | 77.6°F |
| Hawaii | 77.7°F | 77.5°F |
| Kauai | 77.2°F | 75.0°F |
| Maui | 77.1°F | 76.9°F |
| West Palm Beach | 77.0°F | 75.5°F |
| Fort Lauderdale | 76.4°F | 75.1°F |
| Oahu | 76.4°F | 76.5°F |
| Miami Beach | 74.5°F | 73.1°F |
| Key West | 73.6°F | 70.3°F |
| Islamorada | 73.3°F | 71.3°F |
| Key Largo | 72.2°F | 71.1°F |
| Miami | 71.6°F | 70.7°F |
| South Padre Island | 71.4°F | 66.7°F |
| Everglades | 71.4°F | 68.6°F |
| Marco Island | 69.5°F | 65.2°F |
| Naples | 69.2°F | 64.7°F |
| Sanibel Island | 69.2°F | 63.7°F |
| Cocoa Beach | 68.3°F | 60.9°F |
| Corpus Christi | 67.7°F | 61.6°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: 06:50
January 15, thursday
0900
72°F
E
19 mph
19 mph
1200
73°F
E
27 mph
27 mph
1500
72°F
SE
30 mph
30 mph
1800
70°F
SE
29 mph
29 mph
2100
66°F
S
22 mph
22 mph
January 16, friday
0000
63°F
S
23 mph
23 mph
0300
61°F
S
21 mph
21 mph
0600
59°F
SW
18 mph
18 mph
