Ocean surface temperatures hit record high for June

scienceJul 1, 2026351,046

On 21 June the Copernicus Climate Change Service reported global ocean surface temperatures reached their highest June level on record, surpassing the peaks seen in 2023 and 2024. Copernicus warned the new peak could bring consequences for weather patterns, the global climate and marine ecosystems, and noted it coincides with the earliest phases of an El Niño forecast to be the strongest in decades. Scientists said it is too early to know if the sea surface heating will be temporary, because annual peaks often arrive in July and August. Oceans absorb more than 90% of the excess energy in the Earth system; that imbalance reached a record 23 zettajoules last year, more than double the two-decade average. The rate of heat added to the oceans has accelerated, from about the energy of five Hiroshima bombs a second in 2020 to about 11 a second last year. Copernicus director Carlo Buontempo warned that with ocean temperatures at these levels and El Niño on the horizon, more temperature records are likely to fall in the coming months.

Andy Brown

@andybrown1951.bsky.social

The ocean has a huge impact on the climate. More evidence that drill baby drill means burn baby burn www.theguardian.com/environment/...

20145d ago

Gwyn Ap Nudd1

Oh and let's put data centres under the water to cool THEM down, and do what to oceans?🤔

Beccy Pook1

Well hurricane season is not going to be fun.

Quoting this

Malcolm LibDem🔶🏴󠁧󠁢󠁥󠁮󠁧󠁿🇬🇧🇪🇺🇺🇦5

This is becoming increasingly worrying!

Ian Hall

@ianhall.bsky.social

🌊 The oceans have just set another record. New data show global sea surface temperatures reached the highest June levels ever recorded (20.9°C), surpassing previous records from 2023 and 2024. www.theguardian.com/environment/...

11045d ago

Ian Hall28

Ocean heat uptake has accelerated from the equivalent of ~5 Hiroshima bombs/sec (2020) to ~11 bombs/sec (2025). El Niño could amplify global heat, increasing the risk of record temperatures, stronger storms, floods and marine ecosystem stress.

Quoting this

Sabrina Schulz37

Wir haben einen weiteren Hitzerekord, diesmal die Meerestemperatur. Abgesehen von den gravierenden Problemen für das Ökosystem Meer und davon abhängige Nahrungsnetze inkl. Fischerei - wer weiß, wie Stürme und Starkregen entstehen, weiß: Hohe Meerestemperaturen bedeuten nichts Gutes. 🫣

Så kallat svensk13

Men hey! Sverige har skitbillig bensin jämfört med resten av Europa! Brum brum! 🚘

ESA Earth Observation

@esaearth.esa.int

🌊Average global sea surface temperatures reached a new June record in 2026, surpassing the previous June records set in 2023 and 2024. This animation shows sea surface temperature anomalies across the world's oceans, with dark red indicating sea surface temperatures up to 6°C above average.

7944d ago

ESA Earth Observation12

A closer look at the Mediterranean🌡️ This image shows sea surface temperature anomalies across the Mediterranean on 29 June 2026, with the highest average temperature increases seen off southern France and around Corsica, Sardinia and the Italian peninsula. www.esa.int/ESA_Multimed...

Quoting this

ESA in italiano4

Questa animazione di @esaearth.esa.int mostra le anomalie della temperatura della superficie del mare relative agli oceani di tutto il mondo, dove il rosso scuro indica temperature della superficie del mare fino a 6 °C superiori alla media. 👇

McSpocky™

@mcspocky.bsky.social

Ocean temperatures just hit a record high for June, surpassing the brutal 2023 & 2024 peaks. Fueled by fossil fuel emissions & with a strong El Niño approaching, scientists warn of more extremes to come. The oceans are sounding the alarm on our overheating planet. www.theguardian.com/environment/...

6545d ago

Best for Britain

@bestforbritain.org

Temperatures are reaching new extremes, and we are already feeling the consequences of climate change. We need to come together to combat global warming. https://www.theguardian.com/environment/2026/jul/01/ocean-surface-temperatures-hit-a-record-high-for-june

6345d ago

Prof. Eliot Jacobson

@climatecasino.net

Getting towards crunch time... Arctic sea-ice extent is now 2nd lowest on record for the day, as of June 30, 2026.

5645d ago

Quoting this

Prof. Harley Earthling Quinn11

Es wird langsam kritisch … Die Ausdehnung des arktischen Meereises liegt – Stand: 30. Juni 2026 – für diesen Tag auf dem zweitniedrigsten jemals gemessenen Wert. 😨 👇

Dr Duncan Robertson

@duncanrobertson.bsky.social

The thing is, of course, that a small increase in ocean temperatures is a *huuuge* amount of energy.

6345d ago

Left Outside1

Warming oceans scare me more than warming air, its sooooooooo many joules

Prof Michael Meredith 🌊🧪🥼❄️

@oceanandice.bsky.social

Interviewed by CNN and Financial Times today, about the new record set for ocean temperatures.... concerning times! www.ft.com/content/857d... edition.cnn.com/2026/07/01/c... @bas.ac.uk @attractamooney.bsky.social @laurapaddison.bsky.social

4245d ago

Veronica 🇺🇸 🇮🇹 🇺🇦 🇳🇴 🇲🇽 🇩🇪 🇨🇦 🍁

@vero1986.bsky.social

Ocean surface temperatures hit a record high for June. If you really think the environment is less important than the economy, try counting your money while you go underwater. www.theguardian.com/environment/...

4244d ago

Jenny2

💯. So sad many can't see this. 😢

Pissed-Off Scientist1

And fascist bastards fight any attempt at mitigating the danger. Stephen Hawking was right. Humanity is doomed due to greed and stupidity. The PedoTraitor and Con Man of the U.S. is the poster boy.

swooppalm.bsky.social1

The planet will survive once humanity dies.

Greenpeace International 🌍

@greenpeace.org

Ocean surface temperatures just hit record highs. The implications for weather patterns, global climate, and marine life are alarming, to say the least.

3945d ago

Met Office - weather and climate

@metoffice.gov.uk

Provisional Met Office stats for June show: ✅ England’s warmest June on record ✅ UK & Wales - second warmest June since 1884 ✅ 5 of the first 6 months of 2026 at least 1°C above mean average ✅Record-breaking overnight temps for UK, England, Wales & Scotland Details: bit.ly/4bn0b2P

3644d ago

Randall Gross

@randallgross.bsky.social

Ocean surface temperatures hit record high as world enters ‘uncharted territory,’ scientists warn “The planet is warming because we’re emitting vast quantities of greenhouse gasses, primarily from fossil fuel burning,” one expert said. www.nbcnews.com/science/clim...

3345d ago

Quoting this

🗽LOLGOP🗽47

This is where the urgency in the anxiety about limiting citizenship comes from by the way

yarkot.bsky.social6

Context I do not at all like seeing… Removing longstanding protection for federal agencies from political influence, risking their independence, and thus their service in the public interest. www.newsweek.com/supreme-cour... #AwarenessMatters #DemocracyMatters

Lori Lou Freshwater6

The very best scientists and all the tools cannot predict the feedback loops that are going to continue accelerating and making our beautiful home less and less of a habitable planet for human life. The way we are gleefully ignoring this is not something I’m even able to process.

Adrian Ramsay

@adrianramsay.bsky.social

Scientists called 2023 ocean temperature records ‘terrifying’ and ‘bonkers.’ We just broke them. Worse than they thought. And yet the government is failing to get to grips with the climate crisis and considering major new oil drilling. www.theguardian.com/environment/...

2445d ago

Quoting this

Ms M 💚🌱💙🦊🌳🦔🌸🐞🧶♾️5

When are world leaders going to talk again about cutting CO2 emissions? No point in ‘adapting’ to something that will destroy us. Maybe if somewhere like China blew the trumpet for renewables more loudly (they’re world leaders on it) it might set off some competitive responses & make a difference?🔥

Tadzio Mueller

@tadziomueller.bsky.social

Morning, your #BadNewsOfTheDay are here. 1. #collapse is here, & it's starting in the oceans: "A record global average sea temperature in June had pushed the world into 'uncharted territory'. Daily sea surface temperature had surpassed the previous monthly highs." www.ft.com/content/857d...

3245d ago

Doug Parr

@dougparr.bsky.social

The sea has absorbed about 90% of warming driven by climate change With a boost from El Nino, this is taking global average sea surface temperatures to record highs Higher ocean temperatures change ocean ecosystems, and provide extra energy & moisture for storms www.ft.com/content/857d...

1245d ago

1 source

theguardian.comOcean surface temperatures hit a record high for June

Scientists create synthetic 'SpudCell' that feeds, grows and reproducesscience Ocean surface temperatures hit record high for Junescience

Ocean surface temperatures hit record high for June

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