Temperature anomalies in the Pacific Ocean
Monthly anomalies in the Niño 3.4 region relative to a 1991-2020 base
This El Niño event
is expected to
peak in Dec 2026,
with temperatures
in the Pacific almost
4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
J
A
S
O
N
D
J
F
M
A
M
J
This El Niño event is expected
to peak in Dec 2026, with
temperatures in the Pacific
almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
This El Niño event is expected to
peak in Dec 2026, with temperatures
in the Pacific almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
This El Niño event is expected to
peak in Dec 2026, with temperatures
in the Pacific almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
This El Niño event
is expected to
peak in Dec 2026,
with temperatures
in the Pacific almost
4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
J
A
S
O
N
D
J
F
M
A
M
J
This El Niño event is expected
to peak in Dec 2026, with
temperatures in the Pacific
almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
This El Niño event is expected to
peak in Dec 2026, with temperatures
in the Pacific almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
This El Niño event is expected to
peak in Dec 2026, with temperatures
in the Pacific almost 4C above average
2026-27
Forecast
4C
2
1997-98
Previous record
0
−2
All years 1979 to present
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun