Home › Weather › Western Australia Hot Weather Forecast
Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Focus Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Check the live forecast above for current conditions, then prepare for extreme heat across Western Australia, with many inland areas likely to reach well above 40°C today and into the coming days.
What is causing the hot weather?
A slow-moving high-pressure system over the Great Australian Bight is drawing hot, dry air from the interior across WA. This setup typically traps heat and limits cloud cover, allowing temperatures to climb quickly during the afternoon.
- A strong ridge is directing north-easterly winds over the state, carrying heat from the Pilbara southward.
- No significant cold fronts or troughs are expected to push through the southwest for at least 48 hours, prolonging the hot spell.
- Coastal areas such as Perth may be slightly cooler due to a sea breeze, but inland suburbs and regional centres will face the full force of the heat.
How can you stay safe in extreme heat?
Stay indoors during the hottest part of the day, typically between midday and 4pm, and drink plenty of water even if you do not feel thirsty. Check on elderly neighbours and avoid strenuous outdoor activity.
- Keep curtains and blinds drawn during the day to reduce indoor temperatures.
- Use fans or air conditioning; if you don’t have cooling, visit air-conditioned public spaces such as shopping centres or libraries.
- Never leave children or pets in parked cars — inside temperatures can become lethal within minutes.
- Watch for signs of heat exhaustion: dizziness, nausea, headache and excessive sweating. Seek medical help if symptoms worsen.
When will the heat ease?
A weak trough may move through the southwest late in the weekend, bringing a slight drop in temperatures, but most inland areas will remain hot into early next week.
Is this heatwave dangerous for healthy adults?
Yes. Even fit adults can suffer heat stress if they overexert during extreme temperatures. Prolonged exposure can lead to heat stroke, which is a medical emergency requiring urgent treatment.
Which parts of WA are most affected?
The Gascoyne, Goldfields, Central Wheat Belt and northern agricultural areas are likely to experience the highest temperatures. Perth’s coastal suburbs will be cooler, but the city’s eastern suburbs will still reach the high 30s.
For the latest conditions across the country, visit our Australia weather hub. If you are in the southwest, check the Perth weather page for coastal updates, and stay alert for any severe weather warnings issued during this event.