El Niño 2025
2025 was an La Niña year: 0 of 12 three-month seasons had El Niño-level ONI and 3 La Niña-level. The most extreme value was -0.6 °C in OND.
ONI month by month in 2025
| DJF | JFM | FMA | MAM | AMJ | MJJ | JJA | JAS | ASO | SON | OND | NDJ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -0.5 | -0.2 | -0.1 | +0.0 | -0.0 | -0.0 | -0.1 | -0.3 | -0.4 | -0.6 | -0.6 | -0.6 |
Weekly updates from 2025
Dec 31: -0.6 °CDec 24: -0.7 °CDec 17: -0.7 °CDec 10: -0.7 °CDec 3: -0.5 °CNov 26: -0.6 °CNov 19: -0.8 °CNov 12: -0.8 °CNov 5: -0.7 °COct 29: -0.6 °COct 22: -0.6 °COct 15: -0.6 °C
← 20242026 →Full ONI tableStatisticsWeekly update
Frequently asked questions
Was 2025 an El Niño year?
2025 was an La Niña year: 0 of 12 three-month seasons had El Niño-level ONI and 3 La Niña-level. The most extreme value was -0.6 °C in OND.
Source: NOAA CPC Oceanic Niño Index (public domain).