Fairfax Media Network

Agriculture Weather

NINO3.4 Index

  • location
  • Aus

The NINO3.4 index is one of several El Niņo/Southern Oscillation (ENSO) indicators based on sea surface temperatures.

NINO3.4 is the average sea surface temperature anomaly in the region bounded by 5°N to 5°S, from 170°W to 120°W. This region has large variability on El Niņo time scales, and is close to the region where changes in local sea-surface temperature are important for shifting the large region of rainfall typically located in the far western Pacific.

An El Niņo or La Niņa event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niņo or -0.4°C for La Niņa for at least 6 consecutive months.

Southern Oscillation Index


Nino3.4 Index

Display Your Local Weather

Weather News

Lower Goulburn River floodwaters bring environment to life in wetlands

13:02 EDT

Floodwaters can bring destruction to homes, crops and infrastructure but they can also bring life.

Cold, wet weather could mean significantly fewer cherries this Christmas

11:46 EDT

Australia's cherry production is expected to halve this year due to cold weather and prolonged wet conditions.

Calls to install more flood gauges in NSW Lachlan Valley after concerns about lack of accurate data

11:33 EDT

There are calls for more flood gauges across the Lachlan Valley in central west New South Wales after concerns about a lack of accurate data across areas affected by flooding.