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 Baru Island in Colombia, with a temperature of 30.51° C (86.92° F).
  • The lowest is in Rio Grande, Argentina, where the temperature of the water is 4.41° C (39.94° F).