El Niño 2026
2026 was an El Niño year so far: 5 of 9 three-month seasons had El Niño-level ONI and 0 La Niña-level. The most extreme value was +2.5 °C in ASO.
Episodes in 2026
ONI month by month in 2026
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -0.4 | -0.2 | +0.1 | +0.5 | +0.9 | +1.4 | +1.8 | +2.2 | +2.5 |
Weekly updates from 2026
Oct 28: +3.4 °COct 21: +3.4 °COct 14: +3.3 °COct 7: +3.2 °CSep 30: +3.2 °CSep 23: +3.1 °CSep 16: +3.0 °CSep 9: +2.8 °CSep 2: +2.8 °CAug 26: +2.6 °CAug 19: +2.6 °CAug 12: +2.6 °C
← 20252027 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 2026 an El Niño year?
2026 was an El Niño year so far: 5 of 9 three-month seasons had El Niño-level ONI and 0 La Niña-level. The most extreme value was +2.5 °C in ASO.
Which ENSO episodes affected 2026?
El Niño 2026 (+2.5 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).