El Niño 1973
1973 was an La Niña year: 3 of 12 three-month seasons had El Niño-level ONI and 8 La Niña-level. The most extreme value was -2.0 °C in NDJ.
Episodes in 1973
ONI month by month in 1973
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +1.6 | +1.1 | +0.6 | -0.0 | -0.5 | -0.8 | -1.0 | -1.1 | -1.3 | -1.6 | -1.9 | -2.0 |
← 19721974 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 1973 an El Niño year?
1973 was an La Niña year: 3 of 12 three-month seasons had El Niño-level ONI and 8 La Niña-level. The most extreme value was -2.0 °C in NDJ.
Which ENSO episodes affected 1973?
El Niño 1972-1973 (+1.8 °C), La Niña 1973-1974 (-2.0 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).