El Niño 2023
2023 was an El Niño year: 7 of 12 three-month seasons had El Niño-level ONI and 1 La Niña-level. The most extreme value was +2.0 °C in NDJ.
Episodes in 2023
ONI month by month in 2023
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -0.6 | -0.3 | -0.1 | +0.2 | +0.5 | +0.7 | +1.0 | +1.3 | +1.5 | +1.7 | +1.9 | +2.0 |
Weekly updates from 2023
Dec 27: +2.0 °CDec 20: +2.0 °CDec 13: +2.0 °CDec 6: +1.9 °CNov 29: +2.0 °CNov 22: +2.1 °CNov 15: +1.9 °CNov 8: +1.8 °CNov 1: +1.8 °COct 25: +1.6 °COct 18: +1.6 °COct 11: +1.5 °C
← 20222024 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 2023 an El Niño year?
2023 was an El Niño year: 7 of 12 three-month seasons had El Niño-level ONI and 1 La Niña-level. The most extreme value was +2.0 °C in NDJ.
Which ENSO episodes affected 2023?
La Niña 2021-2023 (-0.9 °C), El Niño 2023-2024 (+2.0 °C)
Source: NOAA CPC Oceanic Niño Index (public domain).