What Will The Weather In Perth Be Like On Christmas Day 2025?

Perth over summer is basically the weather equivalent of a strict but reliable parent: hot, dry, predictable and absolutely not here for surprises. And Christmas Day 2025 is shaping up to follow the classic WA script. Expect sunshine that means business, blue skies as far as the eye can see, and that famous Fremantle Doctor sweeping through right when you’re contemplating your third iced drink. Here’s everything you need to know to design the ultimate Perth Christmas Day around the forecast.

Perth’s Christmas Day Weather: The Early Forecast

Early indications from the Bureau of Meteorology point to a quintessential Perth Christmas: think warm to scorching conditions, exceptionally low rain chances and the kind of sunshine that practically begs you to hit the coast before lunch. Coastal suburbs will enjoy cooler, breezier conditions once the Fremantle Doctor rolls in mid-to-late afternoon, while inland spots like Ellenbrook, Armadale and Midland will likely sit several degrees hotter and stay that way well into the evening. Cloud cover is possible if offshore troughs drift close, but meaningful rain is unlikely. In short: a big, bright, heat-forward day.

What Past Years Tell Us

History backs it up. Perth’s Christmas Day highs typically sit around 30–33°C, though the city is no stranger to heat spikes in the high 30s or even low 40s. The UV index is notoriously extreme (among the highest on the planet) making SPF50+ non-negotiable. Rain on Christmas is rare, but humidity can lift if a trough lingers offshore. Unlike the east coast’s unpredictable summer mood swings, Perth’s dry air and stable high-pressure systems generally deliver consistent, easy-to-plan-around holiday weather.

Image credit: Town Of Cottesloe | Website

How To Plan Your Christmas Day In Perth

If you’re heading to the beach, the golden window is early (around 7am to 10am) before the heat and crowd’s peak. Outdoor lunches, backyard spreads and park picnics work best before 1pm, while the afternoon becomes infinitely more pleasant once the sea breeze punches in along the coast. Inland suburbs will feel significantly hotter for longer, so shade, hydration and sun protection should be treated as essential infrastructure. And if the beach is on the cards, get in early because parking at popular spots evaporates fast.

Your Ultimate Heat Hack Kit

Perth’s combination of high heat, extreme UV and bone-dry air means you’ll feel the sun harder and faster than you expect (even seasoned locals get caught out). So if you're heading outdoors, a heat hack kit is non-negotiable.

• Reef-safe SPF50+
• Hat, sunglasses and UV-protective clothing
• Insulated water bottle
• Cooling towel
• Pop-up shade

So, while Perth’s Christmas Day forecast is shaping up to be classic WA (sunny, hot and predictably intense) smart planning will keep the day feeling breezy. Hit the coast early, time your lunch around the heat, and let the Doctor take care of your afternoon comfort. With most venues closed, it’s the perfect excuse for a laidback, sun-drenched Perth Christmas built around good food, good company and staying just cool enough to enjoy it all.

Looking for more? Check out:

• Perth Prepares for Scorching Summer: What This Season’s Heat Predictions Mean for You
• The Fremantle Traffic Bridge Is Closing For A Year, Here’s How To Keep Moving
• Perth Airport Opens Revamped Duty-Free Precinct Featuring WA Brands

Main image credit: Visit Perth | Website