Where is the sea warmest in South America in September?
In September the warmest sea in South America is at Los Puertos de Altagracia, Venezuela, at 30.5°C. 72 of 125 cities measured are comfortable this month.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | Los Puertos de Altagracia | Venezuela | 30.5°C | Bath-like |
| 2 | Santa Cruz de Mara | Venezuela | 30.5°C | Bath-like |
| 3 | San Rafael | Venezuela | 30.5°C | Bath-like |
| 4 | Santiago de Tolú | Colombia | 30.4°C | Bath-like |
| 5 | Turbaná | Colombia | 30.2°C | Bath-like |
| 6 | Cartagena | Colombia | 30.2°C | Bath-like |
| 7 | Ciénaga | Colombia | 30.0°C | Bath-like |
| 8 | Georgetown | Guyana | 30.0°C | Bath-like |
| 9 | Tuschen | Guyana | 29.9°C | Bath-like |
| 10 | Anna Regina | Guyana | 29.9°C | Bath-like |
| 11 | Macapá | Brazil | 29.9°C | Bath-like |
| 12 | Güiria | Venezuela | 29.8°C | Bath-like |
| 13 | San Juan de Urabá | Colombia | 29.7°C | Bath-like |
| 14 | San Andrés | Colombia | 29.7°C | Bath-like |
| 15 | Necoclí | Colombia | 29.6°C | Bath-like |
| 16 | Turbo | Colombia | 29.6°C | Bath-like |
| 17 | Santa Marta | Colombia | 29.5°C | Bath-like |
| 18 | New Amsterdam | Guyana | 29.5°C | Bath-like |
| 19 | Rose Hall | Guyana | 29.5°C | Bath-like |
| 20 | Corriverton | Guyana | 29.5°C | Bath-like |
| 21 | Riohacha | Colombia | 29.5°C | Bath-like |
| 22 | Puerto Cabello | Venezuela | 29.4°C | Bath-like |
| 23 | Morón | Venezuela | 29.4°C | Bath-like |
| 24 | Belém | Brazil | 29.3°C | Bath-like |
| 25 | Nieuw Nickerie | Suriname | 29.2°C | Bath-like |
Ranked on the NOAA OISST monthly climatology — a long-run average for September, not a forecast. A given September will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.