World’s oceans record hottest June ever

A record-high global sea temperature in June is pushing the world into “uncharted territory” scientists warn, as climate change and El Niño raise the risk of more extreme weather ahead

DAILY SEA SURFACE TEMPERATURE FOR 60°N TO 60°S (Celsius)

Jun 29: 20.88°C registered, beating previous records in 2023 and 2024

2026
1979-2022
1991-2020 average
2023
2024
2025

19.6
19.8
20.0
20.2
20.4
20.6
20.8
21.0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

SEA SURFACE TEMPERATURE ANOMALY (Jun 29, Celsius)

0
0.2
0.5
1
2
3
-0.2
-0.5
-1
-2
-3

El Niño: Potentially powerful weather pattern, marked by unusually warm Pacific waters, could push ocean and atmospheric heat even higher in 2026 and into next year

Source and picture: Copernicus C3S/ECMWF
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