Get ready for a sun-kissed start to 2026, Perth! The new year is kicking off with a stretch of balmy weather that’s practically begging you to hit the beach. But here’s where it gets interesting: while temperatures are set to linger in the low 30s, there’s a fascinating—and slightly controversial—weather phenomenon at play. Let’s dive in.
The first few days of January are shaping up to be a summer lover’s dream, with highs of 35.6°C on New Year’s Day, followed by a consistent 34°C on Friday, Saturday, and Sunday. According to Bureau of Meteorology forecaster Jessica Lingard, this pleasant weather is courtesy of a trough moving down the west coast—similar to the one that brought scorching 42°C heat on Christmas Day. But unlike that heatwave, this trough is playing nice, delivering a ‘run of really quite pleasant summery weather.’
And this is the part most people miss: Lingard explains that these troughs can either linger and push temperatures into the 40s or, as in this case, create a milder, more enjoyable climate. By Monday, the trough shifts inland, bringing slightly cooler temperatures in the high 20s—a welcome change after the weekend warmth. Think of it as a weather roller-coaster: warm temperatures rise as the trough forms, then cool off as it moves inland.
Here’s the forecast breakdown:
- Thursday: Sunny, max 35°C ☀️
- Friday: Sunny, 20-34°C ☀️
- Saturday: Sunny, 21-34°C ☀️
- Sunday: Sunny, 21-34°C ☀️
- Monday: Sunny, 20-31°C ☀️
- Tuesday: Sunny, 19-28°C ☀️
- Wednesday: Mostly sunny, 17-30°C ⛅️
But wait—there’s a twist. Residents might notice some haze on Friday and Saturday mornings, a reminder of the bushfires that have been raging around Perth. Lingard attributes this to a controversial yet captivating weather phenomenon called a temperature inversion. Normally, the atmosphere is warmest at the surface, but overnight, cold air can get trapped below warmer air, creating a ‘lid’ effect. This traps smoke from bushfires, spreading it across the metro area until the sun warms the surface and the inversion corrects itself. It’s science in action—but is it a natural wonder or a warning sign?
Thought-provoking question: As Perth enjoys this idyllic start to 2026, should we be celebrating the weather or questioning why bushfire haze is becoming a recurring feature of our summers? Let us know in the comments!
Meanwhile, beyond the weather, Perth is buzzing. Revellers flocked to the riverbanks for dazzling New Year’s fireworks, while in the Kimberley region, Cyclone Hayley tore roofs off homes, forcing locals to seek shelter. It’s a stark reminder of how weather can shape our lives—for better or worse. So, as you soak up the sun this week, take a moment to appreciate the calm before the storm—literally and metaphorically.
