Average sea water temperature in March:
+75.8°F
| Minimum sea water temperature in March: | 80.2°F |
| Maximum sea water temperature in March: | 70.7°F |
Daily sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 76.4°F. The highest and lowest sea temperatures during the month were 79.5°F and 72.7°F.
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Monthly sea water temperature in Key West, °F
Which USA resorts have warmest sea in March?
| Place name | March 2026 | March 2025 |
|---|---|---|
| Everglades | 77.3°F | 74.4°F |
| Kailua Kona | 77.2°F | 77.7°F |
| West Palm Beach | 77.0°F | 75.8°F |
| Honolulu | 76.8°F | 76.8°F |
| Miami Beach | 76.7°F | 75.3°F |
| Hawaii | 76.6°F | 76.7°F |
| Kauai | 76.6°F | 75.0°F |
| Fort Lauderdale | 76.5°F | 75.8°F |
| Key West | 76.4°F | 74.5°F |
| Miami | 75.9°F | 74.4°F |
| Maui | 75.5°F | 76.0°F |
| Oahu | 75.0°F | 75.7°F |
| Cape Coral | 73.7°F | 71.7°F |
| Marco Island | 73.3°F | 71.8°F |
| South Padre Island | 72.5°F | 66.8°F |
| Naples | 72.4°F | 71.4°F |
| Corpus Christi | 71.6°F | 67.0°F |
| Tampa | 71.5°F | 69.3°F |
| Cocoa Beach | 71.5°F | 70.0°F |
| St. Petersburg | 71.1°F | 68.8°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: 03:05
March 29, sunday
0600
73°F
W
15 mph
15 mph
0900
75°F
W
17 mph
17 mph
1200
75°F
W
17 mph
17 mph
1500
73°F
W
17 mph
17 mph
1800
75°F
W
18 mph
18 mph
2100
75°F
W
20 mph
20 mph
March 30, monday
0000
75°F
W
19 mph
19 mph
0300
75°F
W
19 mph
19 mph
