The worldâs oceans are the hottest on record for June
July 5, 2026
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THE worldâs oceans are the hottest on record for June, pushing past records set during the 2023â24 El Niño years.
Right now, the average sea surface temperature is just under 21°C across the worldâs tropical and temperate oceans. Before widespread industrialisation in 1870, the temperature was about 19.6°C.
That may not sound like a big difference but heating the worldâs oceans this much requires a truly enormous amount of energy. Of all the extra heat trapped by greenhouse gases from burning coal, gas and oil, more than 90 per cent has gone into the worldâs oceans.
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