What is the highest temperature the water in the ocean has ever been?



  1. 0 Votes

    Here is chart of Ocean Heat Content maintained by NOAA which shows how the ocean temperatures are the highest now as they have ever been: http://www.nodc.noaa.gov/OC5/3M_HEAT_CONTENT/

  2. 0 Votes

    In terms of average ocean temperature, NOAA recently announced that the July 2009 average temperature of 62.6 degrees was the highest average temperature on record. The 20th century average was 61.5 degrees.

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    The world set an ocean temperature record in August of 2004, when Maine’s water temperature hit a 72 degree mark and Ocean City’s water hit a warm 88 degrees.

    The average water temperature worldwide was 62.6 degrees, according to the National Climatic Data Center, the branch of the U.S. government that keeps world weather records. That was 1.1 degree higher than the 20th century average, and beat the previous high set in 1998 by a couple hundredths of a degree.

  4. 0 Votes

    The other answers are probably what the questioner had in mind, but where molten rock enters the ocean (many places), water boils, so ~100 degrees C at the surface. Under high pressures on the abyssal ocean floor where the boiling point is higher, at hydrothermal vents, water temperatures as high as 464 degrees C have been measured.

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