El Niño 2018
2018 was an El Niño year: 4 of 12 three-month seasons had El Niño-level ONI and 3 La Niña-level. The most extreme value was +1.1 °C in NDJ.
Episodes in 2018
ONI month by month in 2018
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -0.7 | -0.7 | -0.6 | -0.3 | -0.1 | +0.1 | +0.2 | +0.3 | +0.5 | +0.8 | +1.0 | +1.1 |
← 20172019 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 2018 an El Niño year?
2018 was an El Niño year: 4 of 12 three-month seasons had El Niño-level ONI and 3 La Niña-level. The most extreme value was +1.1 °C in NDJ.
Which ENSO episodes affected 2018?
La Niña 2017-2018 (-0.8 °C), El Niño 2018-2019 (+1.1 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).