NINO3.4 Index
The NINO3.4 index is one of several El Niño/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 Niño 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 Niño or La Niña event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niño or -0.4°C for La Niña for at least 6 consecutive months.
Now Temperature
At Darwin Ap
10:30 CST
29°C
25°C
Possible thunderstorm
![](http://web.archive.org./web/20170320011647im_/http://wz5.resources.weatherzone.com.au/images/ads/internal/Summer-Small-300x50.jpg)
Weather News
NSW weather: Foreign student swept off Nobbys Beach rocks remains missing
10:43 EDT
A man remains missing after being swept off rocks and into the sea at Nobbys Beach at Newcastle in the New South Wales Hunter region.
Wet start of the week coming to Melbourne
13:46 EDT
Stunning sunny skies across Victoria are about to give way to wet weather, especially in the south.
Wet and wild week for coastal Queensland
12:52 EDT
With a lingering coastal trough and developing low pressure system, the coming week is set to be soaking and thundery for many parts of the Queensland coastal fringe.
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