South America Sea Temperatures

We track the current and average sea water temperatures for 15 countries in South America. Search the list below to find the country you're looking for.

  • The place with the highest sea temperature in South America today is Costa de Oro in Uruguay, with a temperature of 32.21° C (89.98° F).
  • The lowest is in Rio Gallegos, Argentina, where the temperature of the water is 3.82° C (38.88° F).