Where is the sea warmest in North America in August?
In August the warmest sea in North America is at San Felipe, Mexico, at 31.9°C. 68 of 103 cities measured are comfortable this month.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | San Felipe | Mexico | 31.9°C | Bath-like |
| 2 | Bradenton | United States | 31.0°C | Bath-like |
| 3 | Largo | United States | 30.9°C | Bath-like |
| 4 | Naples | United States | 30.9°C | Bath-like |
| 5 | Cape Coral | United States | 30.9°C | Bath-like |
| 6 | Tarpon Springs | United States | 30.9°C | Bath-like |
| 7 | Laplace | United States | 30.8°C | Bath-like |
| 8 | New Orleans | United States | 30.7°C | Bath-like |
| 9 | Key West | United States | 30.7°C | Bath-like |
| 10 | Acapulco de Juárez | Mexico | 30.7°C | Bath-like |
| 11 | Campeche | Mexico | 30.7°C | Bath-like |
| 12 | Puerto Vallarta | Mexico | 30.5°C | Bath-like |
| 13 | Chetumal | Mexico | 30.4°C | Bath-like |
| 14 | Pensacola | United States | 30.4°C | Bath-like |
| 15 | Miami | United States | 30.3°C | Bath-like |
| 16 | Pompano Beach | United States | 30.3°C | Bath-like |
| 17 | Mazatlán | Mexico | 30.3°C | Bath-like |
| 18 | La Cruz | Mexico | 30.3°C | Bath-like |
| 19 | Manzanillo | Mexico | 30.3°C | Bath-like |
| 20 | Fort Walton Beach | United States | 30.3°C | Bath-like |
| 21 | Hollywood | United States | 30.3°C | Bath-like |
| 22 | West Palm Beach | United States | 30.3°C | Bath-like |
| 23 | Ciudad del Carmen | Mexico | 30.3°C | Bath-like |
| 24 | Panama City | United States | 30.3°C | Bath-like |
| 25 | Salina Cruz | Mexico | 30.2°C | Bath-like |
Ranked on the NOAA OISST monthly climatology — a long-run average for August, not a forecast. A given August will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.