Prosper in a dynamic world
Search

Perth to sizzle in extreme October heat

People of Perth and southwestern WA, prepare for a scorching last few days to round out the month.

An extreme run of heat is coming next week, with Perth temps set to soar as much as 14 degrees above the October average maximum of 23.4°C.

At this stage, Weatherzone’s forecast maximum temps for Perth for Monday through to Thursday are:

  • Monday 33°C
  • Tuesday 35°C
  • Wednesday 36°C
  • Thursday 37°C

These temperatures are obviously not as severe as the temps in the 40s which every Perth resident has sweltered through in recent summers, however they are still exceptionally hot for this time of year.

Indeed, Perth’s hottest October temperature of 37.3°C (in 148 years of records) is very much under threat.

What’s the cause of next week’s heat?

Heat from the interior which will be pushed towards the west coast by persistent easterlies circulating around a large belt of high pressure centred south of the continent.

Image: Persistent easterlies usually mean a hot spell in Perth from spring through to autumn.

Meanwhile temps across the entire South West Land Division will gradually increase as a trough in the west of the state deepens throughout next week.

If the mercury does reach 37°C next Thursday in Perth, it’ll be the city’s hottest day since February 20.

Is this event a heatwave?

Not officially at this stage, no. In its official definition of a heatwave, the BoM specifies that there is no single temperature threshold for a heatwave in Australia, but that a heatwave is defined as:

“Three or more days in a row when both daytime and night-time temperatures are unusually high – in relation to the local long-term climate and the recent past.”

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.  Please visit our website or email us at apac.sales@dtn.com.

Latest news

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

Perth’s wettest day in 11 months as thunderstorms slam western WA businesses

Perth just registered its wettest day since July last year and more rain is in the way for Australia’s west coast in the coming days. The first five months of 2025 were unusually dry in Perth. The city only received 96 mm of its 170 mm average for the period from the start of January to […]

Powerful storms lash New Caledonia and South Pacific

Intense rainfall and thunderstorms impacted New Caledonia early this morning, with more to come for other South Pacific islands to the east. Flooding rainfall and intense thunderstorms in New Caledonia The satellite imagery below shows an area of convergence into a low pressure trough moving over New Caledonia early on Wednesday, June 4. This convergence […]

Big wintry week of rain, snow and frost for Australia’s energy market and hydropower

Rain, storms and winds will move over western WA, while two significant lows and cold fronts will send a deep chill, rain and snow driving energy demand across Tasmania and southeastern mainland Australia, in an unmistakeable sign that winter is now here. Southwest WA Perth appears set for its heaviest rain of 2025 to date […]

Unseasonable fire risk across Australia’s north and south this winter

Abnormally high fire risk is anticipated across parts of South Australia and Victoria this winter as the ongoing drought causes a seemingly endless 2025 fire season in southern Australia, with reduced risk across northern Australia with recent wet months. Increased Risk of Fire for southern Australia Australia’s official seasonal bushfire outlook for winter 2025 was […]