La Niña 1955-1956
La Niña 1955-1956 lasted about 16 months, from Feb–Apr 1955 to Mar–May 1956. The Oceanic Niño Index peaked at -1.6 °C in OND 1955, a strong La Niña, ranked #4 of 20 since 1950.
StartFMA 1955Feb–Apr
EndMAM 1956Mar–May
Duration16 months14 seasons
Peak ONI-1.6 °COND 1955
Average ONI-0.95 °Cduring the episode
StrengthStrong#4 / 20
ONI before, during and after La Niña 1955-1956
Season by season
| Season | Year | ONI | Niño 3.4 temp. |
|---|---|---|---|
| FMA Feb–Apr | 1955 | -0.6 °C | 26.42 °C |
| MAM Mar–May | 1955 | -0.8 °C | 26.56 °C |
| AMJ Apr–Jun | 1955 | -0.8 °C | 26.67 °C |
| MJJ May–Jul | 1955 | -0.9 °C | 26.34 °C |
| JJA Jun–Aug | 1955 | -0.7 °C | 26.13 °C |
| JAS Jul–Sep | 1955 | -0.9 °C | 25.59 °C |
| ASO Aug–Oct | 1955 | -1.1 °C | 25.21 °C |
| SON Sep–Nov | 1955 | -1.4 °C | 24.78 °C |
| OND Oct–Dec | 1955 | -1.6 °C | 24.63 °C |
| NDJ Nov–Jan | 1955 | -1.5 °C | 24.73 °C |
| DJF Dec–Feb | 1956 | -1.2 °C | 25.20 °C |
| JFM Jan–Mar | 1956 | -0.8 °C | 25.82 °C |
| FMA Feb–Apr | 1956 | -0.6 °C | 26.47 °C |
| MAM Mar–May | 1956 | -0.5 °C | 26.84 °C |
Compare with other episodes
← La Niña 1950-1951La Niña 1964-1965 →El Niño 1953El Niño 1957-1958El Niño 2026 (current)
Frequently asked questions
When did La Niña 1955-1956 start and end?
It started in FMA 1955 and ended in MAM 1956, about 16 months.
How strong was La Niña 1955-1956?
Its peak ONI was -1.6 °C (OND 1955), classified as strong. It ranks #4 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.