Home / Weather News /

New world record? 38.4°C water temperature in Florida Keys

15:00
27 July 2023

New world record?
38.4°C water temperature in Florida Keys

key largoCoral reefs in John Pennekamp State Park, Key Largo, Florida, USA.

The waters off the Florida Keys may have detected a new record high sea surface temperature.

It has been incredibly hot in South Florida this year, both on land and in the water. However, an ocean buoy just north of Key Largo in the Florida Keys just recorded an extraordinarily high sea temperature.

The Manatee Bay buoy in the Florida Keys measured a temperature of 38.4°C (101.1°F) at 6 pm local time on Monday 24th July. The buoy is located north of Key Largo and records water temperatures at a depth of 1.5 metres.

Settings for external content

Privacy policy

What makes this measurement so incredible is that if verified, it will shatter the previous world record of 37.6°C (99.7°F) by nearly a whole degree, which was recorded in Kuwait Bay in the Persian Gulf.

Three other buoys nearby measured temperatures above 36.5°C (98°F), indicating that the Manatee Bay measurement is likely accurate. Many other stations off the coast of southern Florida also experienced alarmingly high water temperatures.

The ocean is currently the equivalent to a hot tub off the coast of Florida, and scientists are concerned about the impacts this marine heat wave will have on the delicate ecosystem in the Keys. Coral bleaching is already underway at a time of year when the corals should be full of colour. This heat wave is also impacting land as well.

More on the topic
Small wooded island with a white beach and surrounding coral reef in the deep blue sea.
Thursday 6 November 2025

Ocean warming

Sea level rise is accelerating
Split-screen weather map showing blue rain coverage over western UK and Ireland, and yellow to orange warning zones over England and Wales, with a rain hazard symbol in the centre.
Thursday 13 November 2025

Storm Claudia

Heavy rain likely to bring disruption
The weather map shows a tropical cyclone over the Philippines with its centre east of Manila.
Monday 10 November 2025

Super Typhoon Fung-wong

Philippines hit by second typhoon
All weather news
This might also interest you
Sunday 17 August 2025

Your weather - Your shots

Summer shots from a warm week
Split weather map showing the UK and Ireland. The left side illustrates strong winds circulating around a low-pressure system, with gusts of 20–30 mph highlighted in orange and yellow. The right side shows radar imagery with widespread blue rain bands and patches of thunderstorms, especially over northern England and Scotland.
Thursday 28 August 2025

Breakfast brief

Remaining widely unsettled
Wednesday 27 August 2025

Breakfast brief

Frontal system brings heavy rain
All articles
Weather & Radar

www.weatherandradar.ie

facebooktwitteryouTubeContact uslinkList
Privacy Policy | Legal info | Accessibility statement