2019:  Warmest Year on Record for Oceans

Extreme Weather

2019: Warmest Year on Record for Oceans

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The total heat content of the world’s oceans (OHC) in 2019 was the warmest in recorded human history, according to a paper published in Advances in Atmospheric Sciences.

More than 90% of the increasing heat from human-caused global warming accumulates in the ocean because of its large heat capacity.

“We found that 2019 was not only the warmest year on record, it displayed the largest single-year increase of the entire decade, a sobering reminder that human-caused heating of our planet continues unabated,” said Penn State’s Dr. Michael Mann, one of the co-authors. The gain in ocean heat between 2018 and 2019 was about 44 times as great as all the energy used by humans in one year.


Climate and Capital Reports Advances in Atmospheric Sciences Data on Climate Change effect on ocean temperature


  • Hottest temperature in the Northern Hemisphere: 53.1°C (127.6°F) at Shahdad, Iran, 2 July
  • Coldest temperature in the Northern Hemisphere: -60.5°C (-76.9°F) at GEOsummit, Greenland, 14 Januar
  • Hottest temperature in the Southern Hemisphere: 49.9°C (121.8°F) at Nullarbor, Australia, 19 Decembe
  • Coldest temperature in the Southern Hemisphere: -82.7°C (-116.9°F) at Dome A, Antarctica, 15 June


  • Togo: 43.5°C (110.3°F), 28 March (later tied on 4 April)
  • Jamaica: 39.1°C (102.4°F) at Shortwood Teacher’s College, 22 June
  • France: 46.0°C (114.8°F) at Verargues, 28 June
  • Cuba: 39.1°C (102.4°F) at Veguitas (Cuba), 30 June
  • Belgium: 41.8°C (107.2°F) at Begijnendijk, 25 July
  • Germany: 41.2°C (108.7°F) at Tonisvorst and Duisburg, 25 July
  • Luxembourg: 40.8°C (105.4°F) at Steinsel, 25 July\Netherlands: 40.7°C (105.3°F) at Gilze Rijen, 25 July
  • United Kingdom: 38.7°C (101.7°F) at Cambridge, 25 July
  • Norway: 35.6°C (96.1°F) at Laksfors, 27 July (record tied)\Syria: 50.0°C (122.0°F) at Hasakah, 13 August***

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Climate & Capital Team

Our team aims to lead in the vibrant conversation taking place among entrepreneurs, climate scientists, investors, NGOs, policymakers and corporate leaders around climate change. What’s driving that discussion is a shared realization that building a sustainable future is both a moral imperative and an economic opportunity with potentially exponential returns for our portfolios and most importantly, our planet.