El Niño 2003
2003 was a mostly neutral year: 2 of 12 three-month seasons had El Niño-level ONI and 0 La Niña-level. The most extreme value was +0.9 °C in DJF.
Episodes in 2003
ONI month by month in 2003
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +0.9 | +0.6 | +0.4 | -0.0 | -0.2 | -0.1 | +0.1 | +0.1 | +0.2 | +0.2 | +0.3 | +0.3 |
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Frequently asked questions
Was 2003 an El Niño year?
2003 was a mostly neutral year: 2 of 12 three-month seasons had El Niño-level ONI and 0 La Niña-level. The most extreme value was +0.9 °C in DJF.
Which ENSO episodes affected 2003?
El Niño 2002-2003 (+1.2 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).