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A strong high over southeast Australia is sending showers onto western Tas, northeast NSW and southeast Qld. The same high drives dry, gusty winds across the north and brings light showers to the Top End. A cold front will bring increasing showers to southwest WA. Dry elsewhere.
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Today, 5:58AM UTC
Melbourne expecting coldest morning of the year
Melbourne is forecast to kick off August with a Saturday morning minimum around 2°C, which would make it the city’s coldest morning of the year to date. Melbourne’s coldest night so far this year was July 10, when the mercury fell to 3.1°C. The long-term average August minimum is 6.8°C. The city’s record low was -2.8°C way back on July 21, 1869. Geelong can also expect a chilly start to the month with a minimum of 1°C on Saturday morning, while numerous outer suburbs of both Melbourne and Geelong can expect a frosty first day of August, with early morning temperatures dipping to 0°C or lower. Image: Graphs for Geelong, Vic, on the Weatherzone app. Why will the Melbourne area be so cold on Saturday morning? Cold, dry air in the wake of a midweek cold front brought some of the year’s coldest temperatures to the southeast mainland on Thursday and Friday mornings. The reason Melbourne is likely to have its coldest morning of this chilly spell on Saturday – lagging a day or two behind other SE Australian locations – is because light showers and humidity persisted for a day or two along the Victorian coastline after the passage of the front. But the moisture has now pushed well out into the Tasman Sea, meaning virtually all of Victoria will see a dry weekend with chilly mornings. The only exception is the state’s far southwest where showers could arrive in places like Warrnambool later on Sunday. The good news for those hoping to enjoy the weekend outdoors is that cold nights with frosty mornings often precede clear, sunny days – and that’s what’s in store for Melbourne this weekend, with sunny skies and maximums of 16°C and 17°C expected for Saturday and Sunday respectively. Image: 850 hPa temperatures and mean sea level pressure predicted for 7 pm this Friday, July 31, 2026, showing the high centred over SE Australia enabling stable conditions across much of the region. Mainland Australia’s coldest fortnight of the year continues The past two weeks have brought the coldest temperatures of the year to mainland Australia, due to injections of cold air from two distinct Southern Ocean cold fronts, both of which have been followed by high pressure systems ushering in periods of calm, clear, dry conditions ideal for frosty nights. On July 20, Cooma Visitors Centre recorded mainland Australia’s coldest reading to date in 2026 of -9.5°C. That equalled the year’s coldest night Australia wide, after the same temperature was recorded at Liawenee in Tasmania on June 26. Over the past few mornings, numerous frigid temperatures have been recorded after the midweek cold front. This Friday morning, Cooma Airport and Thredbo Top Station both recorded -8.3°C, while Goulburn Airport – between Canberra and Sydney – fell to -8.2°C. Image: The pole protruding behind a rock near the top right of the image shows the location of Australia’s highest weather station, Thredbo Top Station at 1957 metres. Source: thredbo.com.au. And the recent morning chill hasn’t been confined to southern regions. On Thursday morning, Glen Innes on the NSW Northern Tablelands registered a low of -8.2°C, the day’s coldest temperature anywhere in Australia. The mercury even plunged to -5.4°C in the Queensland town of Oakey this week. Saturday promises to be another chilly morning across most of the locations mentioned, although some spots could be a degree or two warmer than Friday morning. Weekend of the year in the snowfields After as much as 20 centimetres of snow fell midweek across higher parts of the mainland alpine region, the combination of an improved snow cover and clear skies should see a great weekend on the slopes, especially on Saturday. Winds look set to pick up on Sunday ahead of the next frontal system due early in the working week, so conditions may not be so pleasant towards the back end of the weekend, but the positive news is that a light top-up of fresh snow is likely. Next week’s system doesn’t look like the big dump that snow lovers and mountain business operators are still craving, but most resorts currently have more than half of their lifts and terrain open, so the 2026 Australian snow season is in reasonable shape for now. Please check the Weatherzone snow page for the latest forecasts, live snow cams and more.
30 Jul 2026, 8:42PM UTC
A positive Indian Ocean Dipole (IOD) may be developing – What this means for Australia
One of Australia’s main climate drivers – the Indian Ocean Dipole (IOD) – may have just entered a phase that typically brings warm and dry weather to Australia. What is the Indian Ocean Dipole? Australia's weather is shaped by the seasons – cooler winters, warmer summers, and rainfall patterns that vary significantly depending on the time of year and location. But layered on top of this natural seasonality are larger, slower-moving climate drivers that can push conditions above or below average for that time of year. The most well-known climate driver that influences Australia’s weather is the El Niño-Southern Oscillation (ENSO), which alternates between El Niño, neutral and La Niña phases. On the other side of Australia is a similar climate driver called the Indian Ocean Dipole (IOD). The IOD is an index that measures the difference in sea surface temperature anomalies across the tropical Indian Ocean. It is calculated by comparing the anomalies in two defined regions: The IOD East region, which sits to the southwest of Indonesia The IOD West region, which lies off the east coast of Africa, near the Horn of Africa Image: Sea surface temperature anomalies in the Indian Ocean on July 28, 2026. The IOD West and IOD East regions are highlighted. Source: NOAA. The IOD fluctuates between positive, neutral and negative phases. A positive IOD occurs when sea surface temperatures are cooler than average in the IOD East region and warmer than average in the IOD West region. This phase is typically associated with abnormally warm and dry weather in Australia, particularly in winter and early summer. A negative IOD occurs when cooler-than-average water sits in the IOD West region and abnormally warm water lies in the IOD East region. This phase often causes above average rain and below average maximum temperatures in Australia. What is the IOD doing now? The weekly IOD index rose to +0.44°C during the seven days ending on July 26, which is the first time it has exceeded the positive IOD threshold of +0.4°C since March this year. Image: Weekly IOD index values. Source: Weatherzone. This is a sign that a positive IOD may be developing, however, the index will need to remain above +0.4°C for several consecutive weeks for this to be declared as a positive IOD event. Forecast models suggest that this could be the start of a positive IOD event. According to the Bureau of Meteorology, “models suggest a positive IOD may develop during the southern hemisphere winter and persist into spring, although there remains some variation in the timing and strength of this potential event.” In addition to the potential positive IOD, the coming months will also be influenced by an established and strengthening El Niño in the Pacific Ocean. This climate driver will also promote abnormally dry and warm weather in Australia through late winter and spring. Seasonal forecast models are responding to the influence of these two climate drivers, hinting at drier-than-average weather over large parts of Australia in the coming months. Image: Chance of exceeding median rainfall in September, according to the ECMWF SEAS5 model. Source: Weatherzone. Meteorologists will be watching the IOD closely in the coming weeks to see if these early signs of a positive IOD mature into a fully fledged event. Keep an eye on the Weatherzone news feed for regular IOD updates in the weeks and months ahead.
30 Jul 2026, 1:43AM UTC
Darwin shivers through coldest two nights of the year
Residents of the Northern Territory’s Top End and adjacent parts of Western Australia have endured their coldest nights of the year, with minimum temperatures plunging several degrees below the July average. Everything is relative in the way we experience weather, and Darwin locals would have been pulling the blankets and doonas out of the cupboard as the mercury in the city fell to 16.7°C overnight, after a low of 16.5°C the night before. These were the first two nights of 2026 to date where the mercury fell below 17 degrees. While Darwin’s record July (and annual) low of 10.4°C (set in 1942) wasn’t threatened, the last two nights were still well below the July average minimum of 19.3°C, in what is typically the year’s coldest month for both maximums and minimums. Image: Minimums across Australia on July 30, 2026, according to the ECMWF model. While the Top End wasn't as cool overnight as the NT inland or southern Australia, it was still chilly by local standards. Source: Weatherzone. Widespread cold nights in northern Australia Over the border in Western Australia’s Kimberley region, the weather station on Australian Defence Force land at Yampi Sound, near Derby, recorded an overnight minimum of 4.4°C, after a low of 4.6°C on Wednesday morning – the year’s coldest nights to date. No statistically meaningful averages are available for Yampi Sound as the station only opened in 2019, but it’s worth noting that in August 2024, the site registered Australia’s hottest winter temperature on record with a maximum of 41.6°C. Numerous subzero readings have also been registered this week in the inland regions of the NT and Queensland and northern WA. Alice Springs had a run of five sub-zero nights from Saturday through to Wednesday morning. The Sunday minimum of -3.2°C was comfortably the year’s coldest to date although it was still a way off the July (and annual) record low of -7.5°C, set in 1976. Queensland registered its coldest night of the year to date on Sunday when the Darling Downs town of Oakey, near Toowoomba, recorded a minimum of -5.4°C. Oakey’s record July low is -7.2°C, set in 1982. That was an El Niño year like this one, which typically increases the likelihood of dry winter conditions and cold minimums in inland Qld. Why have minimums in northern Australia been so low this week? Image: Synoptic chart at 10 am (AEST) on Thursday, July 30, 2026. Source: Weatherzone. Winter took a while to get going in 2026, with much of June dominated by tropical air pushing southwards across the country from waters north of Australia. In late July, and particularly this week, we have reverted to a more typical winter weather pattern, with southern airmasses influencing weather in the north, as air circulates around strong high pressure systems located over southern Australia, like the one in today’s synoptic chart (above). Will Darwin nights remain "cold" for the rest of the week? The good news for Darwin locals is that minimums in coming nights should be a few degrees warmer than the last two nights, as air passes over the warm waters of the Gulf of Carpentaria before reaching the city, with an associated rise in humidity and overnight temperatures.