Average sea water temperature in April:
+78.7°F
| Minimum sea water temperature in April: | 83.8°F |
| Maximum sea water temperature in April: | 72.5°F |
Daily sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 78.2°F. The highest and lowest sea temperatures during the month were 80.8°F and 76.3°F.
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Monthly sea water temperature in Key West, °F
Which USA resorts have warmest sea in April?
| Place name | April 2026 | April 2025 |
|---|---|---|
| West Palm Beach | 78.2°F | 78.3°F |
| Key West | 78.2°F | 78.0°F |
| Fort Lauderdale | 78.1°F | 78.0°F |
| Miami Beach | 78.0°F | 78.3°F |
| Kailua Kona | 77.6°F | 78.1°F |
| Miami | 77.5°F | 77.9°F |
| Honolulu | 76.5°F | 77.4°F |
| Hawaii | 76.2°F | 77.3°F |
| Maui | 75.9°F | 76.6°F |
| Kauai | 75.9°F | 74.9°F |
| Naples | 75.8°F | 77.0°F |
| South Padre Island | 75.7°F | 74.5°F |
| Tampa | 75.3°F | 76.6°F |
| St. Petersburg | 75.2°F | 76.3°F |
| Corpus Christi | 75.0°F | 74.7°F |
| Oahu | 74.9°F | 76.4°F |
| Clearwater Beach | 74.7°F | 75.6°F |
| Galveston | 74.7°F | 73.8°F |
| Houston | 74.5°F | 73.7°F |
| Sarasota | 74.2°F | 76.0°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: 01:12
November 14, saturday
0300
75°F
S
17 mph
17 mph
0600
73°F
S
17 mph
17 mph
0900
72°F
SW
17 mph
17 mph
1200
70°F
SW
15 mph
15 mph
1500
70°F
S
16 mph
16 mph
1800
70°F
S
15 mph
15 mph
2100
72°F
SW
13 mph
13 mph
November 15, sunday
0000
72°F
SW
13 mph
13 mph
