Where is the sea warmest in North America in April?
In April the warmest sea in North America is at Ciudad del Carmen, Mexico, at 28.6°C. 40 of 103 cities measured are comfortable this month.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | Ciudad del Carmen | Mexico | 28.6°C | Bath-like |
| 2 | Chetumal | Mexico | 28.5°C | Bath-like |
| 3 | Salina Cruz | Mexico | 28.4°C | Bath-like |
| 4 | Acapulco de Juárez | Mexico | 28.0°C | Bath-like |
| 5 | Campeche | Mexico | 28.0°C | Bath-like |
| 6 | Coatzacoalcos | Mexico | 27.6°C | Bath-like |
| 7 | Playa del Carmen | Mexico | 27.5°C | Bath-like |
| 8 | Cancún | Mexico | 27.4°C | Bath-like |
| 9 | West Palm Beach | United States | 26.5°C | Bath-like |
| 10 | Veracruz | Mexico | 26.5°C | Bath-like |
| 11 | Pompano Beach | United States | 26.2°C | Bath-like |
| 12 | Miami | United States | 26.2°C | Bath-like |
| 13 | Hollywood | United States | 26.1°C | Bath-like |
| 14 | Key West | United States | 25.8°C | Very comfortable |
| 15 | Cape Coral | United States | 25.3°C | Very comfortable |
| 16 | Naples | United States | 25.2°C | Very comfortable |
| 17 | Manzanillo | Mexico | 25.1°C | Very comfortable |
| 18 | Waipahu | United States | 25.1°C | Very comfortable |
| 19 | Honolulu | United States | 24.9°C | Very comfortable |
| 20 | Kailua | United States | 24.8°C | Very comfortable |
| 21 | Hilo | United States | 24.6°C | Very comfortable |
| 22 | Puerto Vallarta | Mexico | 24.5°C | Very comfortable |
| 23 | Bradenton | United States | 24.1°C | Very comfortable |
| 24 | Largo | United States | 23.8°C | Very comfortable |
| 25 | Tarpon Springs | United States | 23.7°C | Very comfortable |
Ranked on the NOAA OISST monthly climatology — a long-run average for April, not a forecast. A given April will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.