El Niño weekly update
Generated automatically every week from NOAA data.
Latest: week of October 28, 2026 →
| Week | Niño 3.4 | Niño 1+2 | Phase |
|---|---|---|---|
| October 28, 2026 | +3.4 °C | +5.4 °C | El Niño |
| October 21, 2026 | +3.4 °C | +5.2 °C | El Niño |
| October 14, 2026 | +3.3 °C | +5.2 °C | El Niño |
| October 7, 2026 | +3.2 °C | +5.3 °C | El Niño |
| September 30, 2026 | +3.2 °C | +5.3 °C | El Niño |
| September 23, 2026 | +3.1 °C | +4.9 °C | El Niño |
| September 16, 2026 | +3.0 °C | +4.7 °C | El Niño |
| September 9, 2026 | +2.8 °C | +4.6 °C | El Niño |
| September 2, 2026 | +2.8 °C | +4.4 °C | El Niño |
| August 26, 2026 | +2.6 °C | +4.2 °C | El Niño |
| August 19, 2026 | +2.6 °C | +4.0 °C | El Niño |
| August 12, 2026 | +2.6 °C | +4.1 °C | El Niño |
| August 5, 2026 | +2.5 °C | +4.0 °C | El Niño |
| July 29, 2026 | +2.4 °C | +3.8 °C | El Niño |
| July 22, 2026 | +2.2 °C | +3.6 °C | El Niño |
| July 15, 2026 | +2.1 °C | +3.7 °C | El Niño |
| July 8, 2026 | +2.0 °C | +3.3 °C | El Niño |
| July 1, 2026 | +1.7 °C | +3.3 °C | El Niño |
| June 24, 2026 | +1.8 °C | +3.1 °C | El Niño |
| June 17, 2026 | +1.7 °C | +3.1 °C | El Niño |
| June 10, 2026 | +1.5 °C | +2.6 °C | El Niño |
| June 3, 2026 | +1.3 °C | +2.5 °C | El Niño |
| May 27, 2026 | +1.0 °C | +2.2 °C | El Niño |
| May 20, 2026 | +0.9 °C | +2.1 °C | El Niño |
| May 13, 2026 | +0.9 °C | +1.9 °C | El Niño |
| May 6, 2026 | +0.8 °C | +1.6 °C | El Niño |
| April 29, 2026 | +0.9 °C | +1.3 °C | El Niño |
| April 22, 2026 | +0.8 °C | +1.8 °C | El Niño |
| April 15, 2026 | +0.5 °C | +1.7 °C | El Niño |
| April 8, 2026 | +0.2 °C | +1.6 °C | Neutral |
| April 1, 2026 | +0.1 °C | +1.3 °C | Neutral |
| March 25, 2026 | +0.1 °C | +1.3 °C | Neutral |
| March 18, 2026 | 0.0 °C | +1.4 °C | Neutral |
| March 11, 2026 | -0.1 °C | +1.4 °C | Neutral |
| March 4, 2026 | -0.1 °C | +1.0 °C | Neutral |
| February 25, 2026 | -0.1 °C | +1.0 °C | Neutral |
| February 18, 2026 | -0.1 °C | +1.1 °C | Neutral |
| February 11, 2026 | -0.2 °C | +0.8 °C | Neutral |
| February 4, 2026 | -0.4 °C | +0.6 °C | Neutral |
| January 28, 2026 | -0.5 °C | +0.3 °C | La Niña |
| January 21, 2026 | -0.4 °C | -0.1 °C | Neutral |
| January 14, 2026 | -0.6 °C | -0.2 °C | La Niña |
| January 7, 2026 | -0.7 °C | -0.6 °C | La Niña |
| December 31, 2025 | -0.6 °C | -0.9 °C | La Niña |
| December 24, 2025 | -0.7 °C | -0.4 °C | La Niña |
| December 17, 2025 | -0.7 °C | -0.5 °C | La Niña |
| December 10, 2025 | -0.7 °C | -0.3 °C | La Niña |
| December 3, 2025 | -0.5 °C | -0.3 °C | La Niña |
| November 26, 2025 | -0.6 °C | -0.1 °C | La Niña |
| November 19, 2025 | -0.8 °C | -0.5 °C | La Niña |
| November 12, 2025 | -0.8 °C | -0.8 °C | La Niña |
| November 5, 2025 | -0.7 °C | -0.2 °C | La Niña |
| October 29, 2025 | -0.6 °C | +0.1 °C | La Niña |
| October 22, 2025 | -0.6 °C | +0.3 °C | La Niña |
| October 15, 2025 | -0.6 °C | -0.4 °C | La Niña |
| October 8, 2025 | -0.3 °C | -0.1 °C | Neutral |
| October 1, 2025 | -0.5 °C | -0.1 °C | La Niña |
| September 24, 2025 | -0.5 °C | -0.1 °C | La Niña |
| September 17, 2025 | -0.4 °C | 0.0 °C | Neutral |
| September 10, 2025 | -0.5 °C | -0.2 °C | La Niña |
| September 3, 2025 | -0.3 °C | -0.2 °C | Neutral |
| August 27, 2025 | -0.4 °C | -0.3 °C | Neutral |
| August 20, 2025 | -0.4 °C | -0.1 °C | Neutral |
| August 13, 2025 | -0.3 °C | +0.6 °C | Neutral |
| August 6, 2025 | -0.3 °C | +0.8 °C | Neutral |
| July 30, 2025 | -0.3 °C | +0.4 °C | Neutral |
| July 23, 2025 | -0.2 °C | +0.6 °C | Neutral |
| July 16, 2025 | -0.2 °C | +0.4 °C | Neutral |
| July 9, 2025 | +0.1 °C | +0.4 °C | Neutral |
| July 2, 2025 | 0.0 °C | +0.4 °C | Neutral |
| June 25, 2025 | +0.1 °C | +0.4 °C | Neutral |
| June 18, 2025 | +0.2 °C | +1.0 °C | Neutral |
| June 11, 2025 | 0.0 °C | +0.5 °C | Neutral |
| June 4, 2025 | 0.0 °C | +0.4 °C | Neutral |
| May 28, 2025 | -0.1 °C | +0.8 °C | Neutral |
| May 21, 2025 | -0.2 °C | +0.2 °C | Neutral |
| May 14, 2025 | -0.1 °C | -0.1 °C | Neutral |
| May 7, 2025 | +0.1 °C | 0.0 °C | Neutral |
| April 30, 2025 | -0.1 °C | +0.1 °C | Neutral |
| April 23, 2025 | 0.0 °C | -0.3 °C | Neutral |
| April 16, 2025 | -0.2 °C | +0.6 °C | Neutral |
| April 9, 2025 | -0.1 °C | +1.2 °C | Neutral |
| April 2, 2025 | -0.1 °C | +1.3 °C | Neutral |
| March 26, 2025 | +0.2 °C | +1.2 °C | Neutral |
| March 19, 2025 | -0.1 °C | +0.9 °C | Neutral |
| March 12, 2025 | +0.3 °C | +1.3 °C | Neutral |
| March 5, 2025 | 0.0 °C | +1.6 °C | Neutral |
| February 26, 2025 | -0.2 °C | +1.1 °C | Neutral |
| February 19, 2025 | -0.3 °C | +1.0 °C | Neutral |
| February 12, 2025 | -0.3 °C | +0.9 °C | Neutral |
| February 5, 2025 | -0.6 °C | +0.1 °C | La Niña |
| January 29, 2025 | -0.8 °C | -0.6 °C | La Niña |
| January 22, 2025 | -0.9 °C | -0.4 °C | La Niña |
| January 15, 2025 | -0.6 °C | -0.1 °C | La Niña |
| January 8, 2025 | -0.7 °C | +0.3 °C | La Niña |
| January 1, 2025 | -0.7 °C | +0.1 °C | La Niña |
| December 25, 2024 | -1.1 °C | -0.2 °C | La Niña |
| December 18, 2024 | -0.8 °C | -0.2 °C | La Niña |
| December 11, 2024 | -0.6 °C | -0.2 °C | La Niña |
| December 4, 2024 | -0.3 °C | +0.1 °C | Neutral |
| November 27, 2024 | -0.3 °C | +0.3 °C | Neutral |
| November 20, 2024 | -0.1 °C | +0.8 °C | Neutral |
| November 13, 2024 | 0.0 °C | +0.2 °C | Neutral |
| November 6, 2024 | -0.3 °C | -0.2 °C | Neutral |
| October 30, 2024 | -0.2 °C | -0.5 °C | Neutral |
| October 23, 2024 | -0.5 °C | -0.2 °C | La Niña |
| October 16, 2024 | -0.3 °C | -0.1 °C | Neutral |
| October 9, 2024 | -0.5 °C | -0.4 °C | La Niña |
| October 2, 2024 | -0.3 °C | -0.5 °C | Neutral |
| September 25, 2024 | -0.2 °C | -0.8 °C | Neutral |
| September 18, 2024 | -0.5 °C | +0.2 °C | La Niña |
| September 11, 2024 | -0.2 °C | -0.2 °C | Neutral |
| September 4, 2024 | -0.1 °C | -0.4 °C | Neutral |
| August 28, 2024 | -0.2 °C | -0.5 °C | Neutral |
| August 21, 2024 | 0.0 °C | -0.3 °C | Neutral |
| August 14, 2024 | -0.1 °C | 0.0 °C | Neutral |
| August 7, 2024 | 0.0 °C | -0.2 °C | Neutral |
| July 31, 2024 | -0.2 °C | -0.4 °C | Neutral |
| July 24, 2024 | +0.1 °C | -0.7 °C | Neutral |
| July 17, 2024 | +0.2 °C | -0.5 °C | Neutral |
| July 10, 2024 | +0.3 °C | -0.2 °C | Neutral |
| July 3, 2024 | +0.3 °C | 0.0 °C | Neutral |
| June 26, 2024 | +0.4 °C | -0.6 °C | Neutral |
| June 19, 2024 | +0.3 °C | -0.9 °C | Neutral |
| June 12, 2024 | 0.0 °C | -0.6 °C | Neutral |
| June 5, 2024 | +0.1 °C | -0.5 °C | Neutral |
| May 29, 2024 | +0.1 °C | -1.1 °C | Neutral |
| May 22, 2024 | +0.2 °C | -1.1 °C | Neutral |
| May 15, 2024 | +0.2 °C | -1.1 °C | Neutral |
| May 8, 2024 | +0.3 °C | -0.4 °C | Neutral |
| May 1, 2024 | +0.5 °C | +0.8 °C | El Niño |
| April 24, 2024 | +0.8 °C | 0.0 °C | El Niño |
| April 17, 2024 | +0.7 °C | -0.6 °C | El Niño |
| April 10, 2024 | +0.9 °C | -0.2 °C | El Niño |
| April 3, 2024 | +1.2 °C | -0.1 °C | El Niño |
| March 27, 2024 | +1.0 °C | -0.4 °C | El Niño |
| March 20, 2024 | +1.3 °C | -0.1 °C | El Niño |
| March 13, 2024 | +1.1 °C | +0.4 °C | El Niño |
| March 6, 2024 | +1.4 °C | +1.0 °C | El Niño |
| February 28, 2024 | +1.3 °C | +0.9 °C | El Niño |
| February 21, 2024 | +1.5 °C | +0.7 °C | El Niño |
| February 14, 2024 | +1.5 °C | +1.1 °C | El Niño |
| February 7, 2024 | +1.7 °C | +1.2 °C | El Niño |
| January 31, 2024 | +1.8 °C | +1.0 °C | El Niño |
| January 24, 2024 | +1.7 °C | +0.7 °C | El Niño |
| January 17, 2024 | +1.7 °C | +0.8 °C | El Niño |
| January 10, 2024 | +1.9 °C | +0.9 °C | El Niño |
| January 3, 2024 | +1.9 °C | +1.0 °C | El Niño |
| December 27, 2023 | +2.0 °C | +0.8 °C | El Niño |
| December 20, 2023 | +2.0 °C | +1.6 °C | El Niño |
| December 13, 2023 | +2.0 °C | +1.5 °C | El Niño |
| December 6, 2023 | +1.9 °C | +1.3 °C | El Niño |
| November 29, 2023 | +2.0 °C | +2.1 °C | El Niño |
| November 22, 2023 | +2.1 °C | +2.0 °C | El Niño |
| November 15, 2023 | +1.9 °C | +2.0 °C | El Niño |
| November 8, 2023 | +1.8 °C | +2.2 °C | El Niño |
| November 1, 2023 | +1.8 °C | +2.2 °C | El Niño |
| October 25, 2023 | +1.6 °C | +2.6 °C | El Niño |
| October 18, 2023 | +1.6 °C | +2.3 °C | El Niño |
| October 11, 2023 | +1.5 °C | +2.3 °C | El Niño |
| October 4, 2023 | +1.5 °C | +2.6 °C | El Niño |
| September 27, 2023 | +1.5 °C | +2.8 °C | El Niño |
| September 20, 2023 | +1.7 °C | +2.8 °C | El Niño |
| September 13, 2023 | +1.6 °C | +2.6 °C | El Niño |
| September 6, 2023 | +1.6 °C | +2.9 °C | El Niño |
| August 30, 2023 | +1.6 °C | +3.2 °C | El Niño |
| August 23, 2023 | +1.5 °C | +3.1 °C | El Niño |
| August 16, 2023 | +1.3 °C | +3.3 °C | El Niño |
| August 9, 2023 | +1.2 °C | +3.3 °C | El Niño |
| August 2, 2023 | +1.1 °C | +3.4 °C | El Niño |
| July 26, 2023 | +1.2 °C | +3.0 °C | El Niño |
| July 19, 2023 | +1.1 °C | +3.5 °C | El Niño |
| July 12, 2023 | +1.1 °C | +3.4 °C | El Niño |
| July 5, 2023 | +1.0 °C | +3.3 °C | El Niño |
| June 28, 2023 | +0.9 °C | +2.9 °C | El Niño |
| June 21, 2023 | +1.0 °C | +2.9 °C | El Niño |
| June 14, 2023 | +0.9 °C | +2.7 °C | El Niño |
| June 7, 2023 | +0.9 °C | +2.6 °C | El Niño |
| May 31, 2023 | +0.8 °C | +2.3 °C | El Niño |
| May 24, 2023 | +0.4 °C | +2.0 °C | Neutral |
| May 17, 2023 | +0.5 °C | +1.7 °C | El Niño |
| May 10, 2023 | +0.5 °C | +2.4 °C | El Niño |
| May 3, 2023 | +0.4 °C | +2.7 °C | Neutral |
| April 26, 2023 | +0.4 °C | +2.4 °C | Neutral |
| April 19, 2023 | +0.3 °C | +2.5 °C | Neutral |
| April 12, 2023 | +0.1 °C | +2.7 °C | Neutral |
| April 5, 2023 | 0.0 °C | +2.7 °C | Neutral |
| March 29, 2023 | 0.0 °C | +1.9 °C | Neutral |
| March 22, 2023 | 0.0 °C | +2.0 °C | Neutral |
| March 15, 2023 | +0.1 °C | +1.4 °C | Neutral |
| March 8, 2023 | -0.1 °C | +1.5 °C | Neutral |
| March 1, 2023 | -0.2 °C | +1.1 °C | Neutral |
| February 22, 2023 | -0.3 °C | +0.4 °C | Neutral |
| February 15, 2023 | -0.5 °C | +0.8 °C | La Niña |
| February 8, 2023 | -0.5 °C | +0.7 °C | La Niña |
| February 1, 2023 | -0.5 °C | +0.1 °C | La Niña |
| January 25, 2023 | -0.6 °C | -0.2 °C | La Niña |
| January 18, 2023 | -0.6 °C | -0.3 °C | La Niña |
| January 11, 2023 | -0.7 °C | -0.2 °C | La Niña |
| January 4, 2023 | -0.8 °C | -0.8 °C | La Niña |
| December 28, 2022 | -0.7 °C | -0.3 °C | La Niña |
| December 21, 2022 | -0.8 °C | -0.1 °C | La Niña |
| December 14, 2022 | -0.9 °C | -0.1 °C | La Niña |
| December 7, 2022 | -1.0 °C | -0.7 °C | La Niña |
| November 30, 2022 | -1.0 °C | -0.5 °C | La Niña |
| November 23, 2022 | -0.8 °C | -1.7 °C | La Niña |
| November 16, 2022 | -0.8 °C | -1.3 °C | La Niña |
| November 9, 2022 | -1.0 °C | -1.4 °C | La Niña |
| November 2, 2022 | -1.1 °C | -1.8 °C | La Niña |
| October 26, 2022 | -1.0 °C | -1.8 °C | La Niña |
| October 19, 2022 | -0.8 °C | -1.4 °C | La Niña |
| October 12, 2022 | -0.8 °C | -2.0 °C | La Niña |
| October 5, 2022 | -0.8 °C | -1.6 °C | La Niña |
| September 28, 2022 | -0.8 °C | -1.7 °C | La Niña |
| September 21, 2022 | -0.9 °C | -1.0 °C | La Niña |
| September 14, 2022 | -0.9 °C | -0.8 °C | La Niña |
| September 7, 2022 | -1.0 °C | -0.9 °C | La Niña |
| August 31, 2022 | -0.8 °C | -0.4 °C | La Niña |
| August 24, 2022 | -0.9 °C | -0.5 °C | La Niña |
| August 17, 2022 | -1.2 °C | -0.8 °C | La Niña |
| August 10, 2022 | -1.1 °C | -0.5 °C | La Niña |
| August 3, 2022 | -1.0 °C | -0.6 °C | La Niña |
| July 27, 2022 | -0.7 °C | -0.9 °C | La Niña |
| July 20, 2022 | -0.7 °C | -1.0 °C | La Niña |
| July 13, 2022 | -0.6 °C | -1.2 °C | La Niña |
| July 6, 2022 | -0.5 °C | -1.2 °C | La Niña |
| June 29, 2022 | -0.6 °C | -1.4 °C | La Niña |
| June 22, 2022 | -0.6 °C | -1.4 °C | La Niña |
| June 15, 2022 | -0.6 °C | -1.6 °C | La Niña |
| June 8, 2022 | -0.7 °C | -1.6 °C | La Niña |
| June 1, 2022 | -0.9 °C | -0.6 °C | La Niña |
| May 25, 2022 | -1.0 °C | -1.1 °C | La Niña |
| May 18, 2022 | -1.1 °C | -1.5 °C | La Niña |
| May 11, 2022 | -1.1 °C | -1.4 °C | La Niña |
| May 4, 2022 | -1.2 °C | -1.5 °C | La Niña |
| April 27, 2022 | -1.1 °C | -1.9 °C | La Niña |
| April 20, 2022 | -1.0 °C | -1.9 °C | La Niña |
| April 13, 2022 | -0.9 °C | -1.7 °C | La Niña |
| April 6, 2022 | -0.9 °C | -1.0 °C | La Niña |
| March 30, 2022 | -0.8 °C | -0.8 °C | La Niña |
| March 23, 2022 | -0.9 °C | -0.5 °C | La Niña |
| March 16, 2022 | -1.0 °C | 0.0 °C | La Niña |
| March 9, 2022 | -0.9 °C | -0.5 °C | La Niña |
| March 2, 2022 | -1.0 °C | -1.1 °C | La Niña |
| February 23, 2022 | -0.8 °C | -1.4 °C | La Niña |
| February 16, 2022 | -0.7 °C | -1.5 °C | La Niña |
| February 9, 2022 | -0.6 °C | -1.5 °C | La Niña |
| February 2, 2022 | -0.6 °C | -1.2 °C | La Niña |
| January 26, 2022 | -0.7 °C | -0.8 °C | La Niña |
| January 19, 2022 | -0.8 °C | -0.5 °C | La Niña |
| January 12, 2022 | -0.8 °C | -0.3 °C | La Niña |
| January 5, 2022 | -1.0 °C | -0.7 °C | La Niña |
| December 29, 2021 | -1.1 °C | -1.2 °C | La Niña |
| December 22, 2021 | -1.0 °C | -1.5 °C | La Niña |
| December 15, 2021 | -1.1 °C | -1.7 °C | La Niña |
| December 8, 2021 | -1.1 °C | -1.5 °C | La Niña |
| December 1, 2021 | -0.9 °C | -1.3 °C | La Niña |
| November 24, 2021 | -0.7 °C | -1.0 °C | La Niña |
| November 17, 2021 | -0.9 °C | -1.1 °C | La Niña |
| November 10, 2021 | -0.9 °C | -0.5 °C | La Niña |