El Niño 2005
2005 was a mostly neutral year: 2 of 12 three-month seasons had El Niño-level ONI and 2 La Niña-level. The most extreme value was -0.8 °C in NDJ.
Episodes in 2005
ONI month by month in 2005
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +0.6 | +0.6 | +0.4 | +0.4 | +0.3 | +0.1 | -0.0 | -0.1 | -0.1 | -0.3 | -0.6 | -0.8 |
← 20042006 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 2005 an El Niño year?
2005 was a mostly neutral year: 2 of 12 three-month seasons had El Niño-level ONI and 2 La Niña-level. The most extreme value was -0.8 °C in NDJ.
Which ENSO episodes affected 2005?
El Niño 2004-2005 (+0.7 °C), La Niña 2005-2006 (-0.9 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).