Seasonal Outlook

Seasonal Heat Load Outlook

December to February

Temperature
  • Summer daytime temperatures are likely to be warmer than average for most of SA, VIC, TAS, the southern NT, and far northern Australia.
  • Summer nights are likely to be warmer than average for northern, central and southeastern Australia and along the southern WA coastline.

Rainfall
  • Rainfall is likely to be near average for most of Australia. However, parts of the Pilbara and Gascoyne in WA, and coastal regions of southeast Australia are likely to have a wetter than average summer, while Northern Cape York Peninsula in Queensland is likely to be drier.  
  • A typical number of tropical cyclones are expected for the 2017-18 Australian tropical cyclone season (November-April).
La Niña is expected to occur by the end of 2017. However, climate models suggest that the event may be weak and short-lived, returning to near average values during autumn 2018. Although La Niña typically brings above average rainfall to eastern Australia during summer other climate drivers (such as ocean temperatures around northern Australia) may play a role during summer, to some degree counteracting La Niña effects.

This information is based on the seasonal outlook provided by the Australian Bureau of Meteorology.


Given the warmer than average conditions during both day and night in Victoria and SA combined with wetter than average in Victoria, the heat load conditions are expected to be higher than normal in these regions, particularly in Victoria.