Does La Nina Last 7 Years 2024. This cycle tends to swing from extreme to extreme every three to seven years on average, but while el niños. The noaa climate prediction center announced an end to the el niño climate phenomenon on thursday, and predicted that la niña could start as early as.

This cycle tends to swing from extreme to extreme every three to seven years on average, but while el niños. El niño and la niña events occur every two to seven years, on average, but.