Tomorrow is going to be another hot day across the south-east, but significantly cooler about southern parts of Victoria. Up in the Top End, however, a low-pressure system is drawing a huge amount of moisture across northern Australia and into the east, with showers and storms extending from the tropics down into Victoria. Out in the west, an eastward-moving trough will bring some showers and storms. Significantly, a low-pressure system in the Great Australian Bight is expected to deepen over the weekend, with the potential for high-end severe storms across south-eastern parts of the country on Sunday.
Across Queensland, partly cloudy and dry conditions continue through the south-eastern quadrant of the state, with just the risk of a shower about coastal parts north of K'gari. In the west and about the Cape York Peninsula, showers and storms are expected, with the potential for heavy rainfall near the low-pressure system over the Gulf Country. Daytime maximum temperatures will be in the low 30s across eastern and northern parts, grading to the high 30s and near 40 through inland areas. Brisbane can expect mostly sunny conditions, a chance of fog patches about the western suburbs, and a top of 32 degrees.
In New South Wales and the ACT, it will be a very wet start across much of the south, with showers and storms extending through large parts of the state, apart from northern and north-eastern areas. There is a risk of severe thunderstorms about the south coast, adjacent ranges and the southern slopes, bringing damaging winds, large hail or heavy rainfall. Maximum temperatures will be in the low to mid-30s along the east coast, quickly grading toward 40 degrees further inland. Sydney can expect a partly cloudy day with showers and the risk of a thunderstorm, most likely during the afternoon or evening, with a top of 31 degrees. Canberra will be partly cloudy with showers and the risk of thunderstorms, reaching 32 degrees.
In Victoria, showers and storms are possible across much of the eastern half of the state, clearing the Central district during the afternoon. Further west, conditions will be dry and mostly sunny. It will be mild on and south of the ranges, with maximum temperatures in the high teens to low 20s, grading into the mid to high 30s north of the divide. Melbourne has a slight risk of a shower or storm during the morning, with a top of 23 degrees.
Across Tasmania, hit-and-miss showers are expected statewide, clearing at night, with a risk of a thunderstorm about the south and east during the morning. Daytime temperatures will be warm to hot in the east, but significantly cooler in the west. Hobart can expect the risk of a morning shower or storm and a top of 25 degrees.
In South Australia, showers and storms are expected to develop through eastern and northern parts of the state, remaining very hit and miss. Coastal showers will move into the western and central coasts at night. Adelaide can expect a sunny day with increasing cloud and a top of 28 degrees.
In Western Australia, showers and storms extend from the Gascoyne down into Eucla, moving eastwards with the trough. In the far south-west, a southerly change will bring a few scattered showers about the south coast, along with cooler conditions. Perth can expect a mostly sunny day and a top of 29 degrees.
Across the Northern Territory, conditions remain very active, with showers and storms enhanced by the low-pressure system, particularly developing north of Alice Springs during the afternoon. There is potential for heavy rainfall through the eastern Top End and Gulf Country. Darwin can expect showers with the risk of storms and a top of 33 degrees.
Looking ahead to Sunday, a deepening cloud band will extend from the tropics into the south-east, with a risk of high-end severe thunderstorms across Victoria and southern parts of New South Wales, including Melbourne and Canberra. The dry run will continue for south-eastern Queensland, while heatwave conditions peak across eastern New South Wales and extend into the south-eastern corner of Queensland. Out west, a ridge of high pressure will bring settled, dry and clear conditions.
For a more detailed forecast for your local area, head to the Bureau's website, app or social media. Otherwise, we'll see you again next time. Have a great weekend. Bye for now.
Video current: 3.30 pm AEDT Friday 19/12/25.
