Perth Weather Forecast 2026: Warm & Sunny Outlook

by ethan.brook News Editor

Perth Set for Scorching Start to 2026 with Beach-perfect Weather

Residents of Perth, Australia, can anticipate idyllic beach conditions in the opening days of 2026, as temperatures are forecast to remain in the low to mid-30s celsius through at least Monday. New year’s Day is expected to reach a high of 35.6C, followed by consistent warmth with 34C predicted for Friday, Saturday, and Sunday.

Did you know? Perth’s average January temperature is 31.8°C, making it one of Australia’s hottest capital cities.

A welcome Break After Christmas Heat

The pleasant conditions represent a shift from the intense heat experienced earlier in the holiday period. A forecaster with the Bureau of Meteorology explained that the current spell of balmy weather is being driven by a trough moving down the west coast,similar to the system that caused a sweltering maximum of 42C on Christmas Day.

“Some of these troughs linger and drive temperatures up into the 40s, leading to heatwaves,†the forecaster stated. “Other times, we get this nice run of really quite pleasant summery weather.†This particular trough is expected to remain influential through Sunday, before shifting inland overnight into Monday, bringing slightly cooler temperatures.

Pro tip Stay hydrated! Drink plenty of water throughout the day, especially when enjoying outdoor activities.

cooling Trend Next Week

the shift inland will usher in a noticeable cooling trend for the start of next week. Monday’s forecast calls for a high of 31C, followed by 28C on Tuesday and 30C on Wednesday. A considerably cooler overnight minimum of 17C is anticipated after wednesday.

Hazy Skies Linked to Bushfires

Despite the favorable temperatures, residents in the metropolitan area should prepare for some haze during the mornings on Friday and saturday. This haze is “indicative†of the ongoing bushfires that have been impacting the region in recent days.

The haze is the result of a fascinating atmospheric phenomenon known as an inversion. “Overnight, we get what’s called an inversion forming, where the temperature of the atmosphere should be warmest at the surface and decrease as you move away,†the forecaster explained. “However, it can flip, with cold air at the surface and warmer air above. This creates a ‘lid’ that traps smoke from bushfires, spreading it across the metro area until the sun warms the surface layer.â€

[Image of siblings enjoying sunshine on Matilda Bay. Credit: Justin Benson-Cooper/The West Australian]

Reader question How do bushfires affect air quality beyond visible haze?

Perth weather Forecast: A Detailed Look

Here’s a complete look at the Perth weather forecast:

  • Thursday: Sunny, max 35C☀ï¸
  • Friday: Sunny, 20-34C☀ï¸
  • Saturday: Sunny, 21-34C☀ï¸
  • Sunday: Sunny, 21-34C☀ï¸
  • Monday: Sunny, 20-31C☀ï¸
  • Tuesday: Sunny, 19-28C☀ï¸
  • Wednesday: Mostly sunny, 17-30Câ›…ï¸

The coming days promise a delightful opportunity for Perth residents to enjoy the outdoors, though awareness of potential haze from nearby bushfires remains critically important. The forecast suggests a welcome respite from extreme heat, offering a balanced start to the new year.

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