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

Australian outback in full bloom with best wildflower display in 30 years

11:13 EDT

A record-breaking and continuous winter downpour has caused an explosion of colour in the Australian outback, with country from Coober Pedy in South Australia to Toowoomba in Queensland green and dotted with wildflowers.

Footy weather keeping race-goers and cricketers wrapped up

19:21 EDT

Melbourne has chilled through its coldest pair of days this late in the year since 1983, reaching a footy-season like 13.2 degrees on Saturday and 14.2 on Sunday.

Cooler start to the working week for southwest WA

12:21 EDT

Following a nice Sunday to end the weekend, the mercury is set to plunge on Monday as a cold front welcomes the working week.