Eight days out, forecasts suggest Christmas Day across Australia will be typically hot, humid and thundery in the north, windy in the south, wet in the southeast and dry on the west coast. At this stage, our computer models tell us that a front should be crossing southern Australia, bringing a cooler, gusty change with a low pressure trough causing some rain over southeastern Australia and in the north of the country. Possible estimated extremes eight days out are - Hottest - 24-degree minimum and 43-degree maximum at Roebourne in Western Australia's Pilbara Coldest - 4-degree minimum and 11-degree maximum at Mt Read in Tasmania Wettest - 29mm at Camooweal in Queensland's northwest Cloudiest - 3 hours of sunshine at Mt Isa in Queensland's northwest Sunniest - 14 hours of sunshine at Nuriootpa in South Australia's Barossa Valley Windiest - 80km/h at Mt Hotham in Victoria's North East Calmest - 20km/h at Quirindi in New South Wales' North West Slopes and Plains As we get closer to the day, models will change and accuracy will improve, giving us different places and amounts, so stay tuned for updates.