La Niña 2008-2009
La Niña 2008-2009 lasted about 7 months, from Oct–Dec 2008 to Feb–Apr 2009. The Oceanic Niño Index peaked at -0.9 °C in DJF 2009, a weak La Niña, ranked #16 of 20 since 1950.
StartOND 2008Oct–Dec
EndFMA 2009Feb–Apr
Duration7 months5 seasons
Peak ONI-0.9 °CDJF 2009
Average ONI-0.74 °Cduring the episode
StrengthWeak#16 / 20
ONI before, during and after La Niña 2008-2009
Season by season
| Season | Year | ONI | Niño 3.4 temp. |
|---|---|---|---|
| OND Oct–Dec | 2008 | -0.6 °C | 26.15 °C |
| NDJ Nov–Jan | 2008 | -0.8 °C | 25.87 °C |
| DJF Dec–Feb | 2009 | -0.9 °C | 25.79 °C |
| JFM Jan–Mar | 2009 | -0.8 °C | 26.07 °C |
| FMA Feb–Apr | 2009 | -0.6 °C | 26.71 °C |
Compare with other episodes
← La Niña 2007-2008La Niña 2010-2011 →El Niño 2009-2010El Niño 2026 (current)
Frequently asked questions
When did La Niña 2008-2009 start and end?
It started in OND 2008 and ended in FMA 2009, about 7 months.
How strong was La Niña 2008-2009?
Its peak ONI was -0.9 °C (DJF 2009), classified as weak. It ranks #16 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.