Where is the sea warmest in North America in May?
In May the warmest sea in North America is at Ciudad del Carmen, Mexico, at 30.0°C. 41 of 103 cities measured are comfortable this month.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | Ciudad del Carmen | Mexico | 30.0°C | Bath-like |
| 2 | Salina Cruz | Mexico | 29.9°C | Bath-like |
| 3 | Campeche | Mexico | 29.7°C | Bath-like |
| 4 | Chetumal | Mexico | 29.5°C | Bath-like |
| 5 | Acapulco de Juárez | Mexico | 29.5°C | Bath-like |
| 6 | Coatzacoalcos | Mexico | 28.9°C | Bath-like |
| 7 | Playa del Carmen | Mexico | 28.5°C | Bath-like |
| 8 | Cancún | Mexico | 28.4°C | Bath-like |
| 9 | Veracruz | Mexico | 28.0°C | Bath-like |
| 10 | Key West | United States | 27.9°C | Bath-like |
| 11 | Cape Coral | United States | 27.9°C | Bath-like |
| 12 | Naples | United States | 27.9°C | Bath-like |
| 13 | Miami | United States | 27.7°C | Bath-like |
| 14 | West Palm Beach | United States | 27.7°C | Bath-like |
| 15 | Pompano Beach | United States | 27.7°C | Bath-like |
| 16 | Hollywood | United States | 27.6°C | Bath-like |
| 17 | Bradenton | United States | 27.1°C | Bath-like |
| 18 | Tarpon Springs | United States | 27.0°C | Bath-like |
| 19 | Largo | United States | 27.0°C | Bath-like |
| 20 | Manzanillo | Mexico | 26.9°C | Bath-like |
| 21 | Puerto Vallarta | Mexico | 26.7°C | Bath-like |
| 22 | Mazatlán | Mexico | 26.3°C | Bath-like |
| 23 | New Orleans | United States | 26.1°C | Bath-like |
| 24 | Laplace | United States | 26.1°C | Bath-like |
| 25 | La Cruz | Mexico | 25.8°C | Very comfortable |
Ranked on the NOAA OISST monthly climatology — a long-run average for May, not a forecast. A given May will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.