La Niña 2005-2006
La Niña 2005-2006 lasted about 7 months, from Oct–Dec 2005 to Feb–Apr 2006. The Oceanic Niño Index peaked at -0.9 °C in DJF 2006, a weak La Niña, ranked #17 of 20 since 1950.
StartOND 2005Oct–Dec
EndFMA 2006Feb–Apr
Duration7 months5 seasons
Peak ONI-0.9 °CDJF 2006
Average ONI-0.74 °Cduring the episode
StrengthWeak#17 / 20
ONI before, during and after La Niña 2005-2006
Season by season
| Season | Year | ONI | Niño 3.4 temp. |
|---|---|---|---|
| OND Oct–Dec | 2005 | -0.6 °C | 26.16 °C |
| NDJ Nov–Jan | 2005 | -0.8 °C | 25.86 °C |
| DJF Dec–Feb | 2006 | -0.9 °C | 25.83 °C |
| JFM Jan–Mar | 2006 | -0.8 °C | 26.11 °C |
| FMA Feb–Apr | 2006 | -0.6 °C | 26.71 °C |
Compare with other episodes
← La Niña 2000-2001La Niña 2007-2008 →El Niño 2004-2005El Niño 2006-2007El Niño 2026 (current)
Frequently asked questions
When did La Niña 2005-2006 start and end?
It started in OND 2005 and ended in FMA 2006, about 7 months.
How strong was La Niña 2005-2006?
Its peak ONI was -0.9 °C (DJF 2006), classified as weak. It ranks #17 among 20 La Niña episodes since 1950.
Episodes are computed from NOAA's Oceanic Niño Index (ERSSTv5) with the standard rule: five or more consecutive overlapping seasons at or beyond ±0.5 °C. Free to cite with a link to elninoforecast.com.