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 77.9°F. The highest and lowest sea temperatures during the month were 79.5°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 |
|---|---|---|
| Everglades | 78.3°F | 78.8°F |
| West Palm Beach | 78.1°F | 78.3°F |
| Fort Lauderdale | 78.0°F | 78.0°F |
| Miami Beach | 77.9°F | 78.3°F |
| Key Largo | 77.9°F | 78.5°F |
| Key West | 77.9°F | 78.0°F |
| Hialeah | 77.6°F | 77.9°F |
| Kailua Kona | 77.4°F | 78.1°F |
| Miami | 77.4°F | 77.9°F |
| Honolulu | 76.3°F | 77.4°F |
| Cape Coral | 76.1°F | 77.2°F |
| Hawaii | 76.1°F | 77.3°F |
| Kahului | 76.0°F | 76.8°F |
| Marco Island | 75.9°F | 77.3°F |
| Kauai | 75.9°F | 74.9°F |
| Maui | 75.8°F | 76.6°F |
| Naples | 75.4°F | 77.0°F |
| Tampa | 75.0°F | 76.6°F |
| St. Petersburg | 75.0°F | 76.3°F |
| Oahu | 74.8°F | 76.4°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: 15:37
April 26, sunday
1800
79°F
SE
2 mph
2 mph
2100
77°F
SE
6 mph
6 mph
April 27, monday
0000
77°F
SW
6 mph
6 mph
0300
77°F
SW
4 mph
4 mph
0600
77°F
S
6 mph
6 mph
0900
77°F
SW
5 mph
5 mph
1200
77°F
SW
6 mph
6 mph
1500
77°F
S
6 mph
6 mph
