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
Map showing the water temperature of the North Sea. A value of 15.7 degrees is displayed in the centre. The coastal regions of England, the Netherlands, Germany and Denmark are visible.
Thursday 11 September 2025

Lots of rain in sight

New heat record in the North Sea
Split weather map comparing two wind conditions over the Atlantic. The left side shows a powerful cyclone near the US East Coast, with a distinct eye surrounded by intense purple and red bands of strong winds. The right side shows calmer conditions, mostly green shading with lighter winds illustrated by white streamlines and small yellow patches. An arrow in the centre indicates the transition from storm to calmer weather.
Wednesday 10 September 2025

Since Erin

Hurricane season exceptionally calm
Check out our pollen forecast for your specific location inside the app.
Monday 8 September 2025

Spores and pollen

Are you impacted by autumn hay fever?
All weather news
This might also interest you
Wednesday 27 August 2025

Breakfast brief

Frontal system brings heavy rain
Friday 22 August 2025

Breakfast brief

Sunny start for some, overcast later
Weather map of the UK and Ireland showing scattered showers with cloudy patches across much of the region, especially around western and northern areas. Sunshine symbols appear over London, Cardiff, and parts of southern England, while temperatures range from 17°C to 18°C in most places. Areas of heavier rain are visible over the Atlantic to the west.
Friday 29 August 2025

Breakfast brief

Unsettled conditions into the weekend
All articles
Weather & Radar

www.weatherandradar.ie

facebooktwitteryouTubeContact uslinkList
Privacy Policy | Legal info | Accessibility statement