Prosper in a dynamic world
Search

Could Melbourne see its coldest week in 11 years?

Melbourne is shivering through its first extremely cold morning of the week, with the potential to see one of the coldest weeks in 11 years on the horizon. 

The temperature at Olympic Park in Melbourne dropped to 3.8°C early Tuesday morning, July 2, which could be the first of many extremely cool nights.  

As of 11am, the temperature in Melbourne just reached double digits and is only expected to climb to around 13°C this afternoon.  

The cool days and nights are being caused by a very cool airmass sitting over southeastern Australia, under the influence of a stubborn high-pressure system which is not expected to move until late this week into next.  

The image below shows that the extremely cold airmass that was forecast over southeastern Australia earlier this morning. 

 Image: 850 hPa temperature (1.5km above the surface) at 4am AEST on Tuesday, July 2, according to ECMWF 

Thanks to this stagnant weather pattern, Melbourne could see a week-long run of mornings at or below 5°C. If this were to happen it would be the first time since June 2013, the coldest week in 11 years. 

The coldest morning of the week is forecast for early Wednesday morning, with Melbourne’s minimum expected to drop to 1°C, which is 5°C below the July average.  

To the west and southwest of Melbourne, along the gas distribution network, temperatures are forecast to be freezing.  

Horsham, Bendigo, Ballarat are all forecast to drop to between –1°C and -3°C on Wednesday morning, which could affect gas distribution in the regions. Thursday morning looks slightly warmer with minimums around 0°C forecast. 

The cool overnight temperatures come at a time of low wind power in Victoria which may also impact the energy grid.  

The cool morning starts will mean that temperatures should remain around 2 to 3°C below average for much of this week.  

So, when is it going to warm up and become windy again?  

Temperatures will trend to slightly above average from Sunday into early next week as the stubborn high-pressure system slowly begins to move east directing northerly winds across Vic.  

There are signs that we could finally see a cold front and strong winds move across Vic later next week, which should increase wind power in the region.  

Weatherzone Business has grown to become the outright leader within the Australian energy market, serving wind, solar, hydro, trading, utilities and network companies.

You can’t control the weather, but you can gain precision insights to optimise your response. What lights us up is providing your energy business with tailored weather information to reduce your risk and keep you moving ahead of the curve. 

Our services cover all aspects – from wind and solar generation to demand forecasts, wholesale markets to retail so, no matter where your company sits, we have solutions for you. We have worked closely with market participants to create products that meet the evolving needs of the sector, aiming to increase safety and profitability for our customers. 

Benefit from the timely delivery of accurate weather information, allowing informed and effective decision-making. To find out more, please contact us at apac.sales@dtn.com. 

Latest news

Satisfy your weather obsession with these news headlines from around the nation, and the world.

How does DTN help businesses monitor bushfire induced pyrocumulonimbus thunderstorms that ignite more fires?

Intense heat from bushfires during elevated fire danger days can trigger fire-induced pyrocumulonimbus thunderstorms that ignite additional fires. In early January 2026, an extreme heatwave sweeping over southeastern Australia brought catastrophic fire danger to Victoria. Intensely hot bush and grass fires spread erratically and quickly in hot, dry and gusty winds, with pyrocumulonimbus generating lightning, […]

Active seas to the north and east of Australia disrupting port and maritime operations

Seas to the north and east of Australia are experiencing periods of increased activity this week, leading to disruptions to port, maritime and offshore operations. Intense and hazardous Tasman Sea Ocean conditions across NSW’s South Coast rapidly deteriorated last Friday as a deep feed of easterly winds whipped up large and dangerous seas. The Batemans […]

Transport, emergency and energy industries flooded across Greater Sydney with weekend deluges

Transport, emergency, energy and port industries in eastern NSW and Sydney were impacted by significant flash flooding with intense and heavy rainfall this weekend. Rainfall rates between 80 and 140mm in one to three hours were registered across parts of Sydney’s Northern Beaches and Central Coast on Saturday afternoon and evening. In some areas, these […]

DTN Dangerous Thunderstorm Alerts in action with severe thunderstorms disrupting Perth industries

Severe thunderstorms impacted southwest WA and the Perth region on Sunday, December 14, 2025, triggering Dangerous Thunderstorm Alerts (DTA) by DTN for industries and businesses in the region. DTN operates Dangerous Thunderstorm Alerts (DTA) which alert businesses and industries to thunderstorms based on intensity and movement. These alerts provide advanced notice of thunderstorms moving into […]