El Niño 1998
1998 was an La Niña year: 4 of 12 three-month seasons had El Niño-level ONI and 6 La Niña-level. The most extreme value was +2.2 °C in DJF.
Episodes in 1998
ONI month by month in 1998
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +2.2 | +1.9 | +1.4 | +1.0 | +0.4 | -0.1 | -0.6 | -0.8 | -1.0 | -1.1 | -1.3 | -1.5 |
← 19971999 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 1998 an El Niño year?
1998 was an La Niña year: 4 of 12 three-month seasons had El Niño-level ONI and 6 La Niña-level. The most extreme value was +2.2 °C in DJF.
Which ENSO episodes affected 1998?
El Niño 1997-1998 (+2.4 °C), La Niña 1998-2000 (-1.5 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).