- WEATHER
Australia
- National
- New South Wales
- Victoria
- Queensland
- Western Australia
- South Australia
- Tasmania
- ACT
- Northern Territory
Long Range Forecasts
- WARNINGS
- RADAR
- SATELLITE
- MAPS & CHARTS
- LONG RANGE
Long Range Forecasts
- CLIMATE
Climate Indicators
- NEWS
Agriculture Weather
NINO3.4 Index
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
Enter a postcode or town name for local weather, or text to search the site. » advanced search
Summery Sydney, wintry Melbourne
15:39 AEST It's been one of those days when Australia's two largest cities could hardly have been more different in terms of weather.
- 13:00 AEST Rainfall to soak some parched areas of WA
- 10:33 AEST Tassie snow, Melbourne temps go low
- 16:40 AEST Australia's tropical cyclone season coming to an end
- 10:07 AEST Wind returning to southeastern Australia
Help with Farmonline Weather
