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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Pulse Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for Treeby’s current conditions before heading out, as Perth’s coastal influence can shift the afternoon breeze quickly. Treeby’s weather is shaped by its position on the Swan Coastal Plain, giving it warm, dry summers and mild, wet winters.
What makes Treeby’s weather different from central Perth?
Treeby sits about 20 kilometres south of the Perth CBD, which means it often feels a degree or two cooler than the city centre in summer due to its proximity to the coast. The afternoon sea breeze, known locally as the Fremantle Doctor, typically arrives later here than in coastal suburbs, sometimes not until mid-afternoon. This can make the morning feel noticeably warmer before the wind shifts.
When is the best time to visit Treeby?
The most comfortable months are October to April, when rainfall is low and daytime temperatures sit between 22°C and 32°C. January and February are the hottest, with occasional days above 38°C, but the sea breeze usually provides relief by late afternoon. Winter (June to August) brings most of the annual rainfall, with average highs around 18°C and frequent cloudy spells.
Does Treeby get thunderstorms often?
Thunderstorms are uncommon in Treeby, occurring roughly 10–15 days per year, mostly in late spring or early summer. They are usually brief and associated with passing cold fronts.
How does the Fremantle Doctor affect Treeby?
The afternoon sea breeze lowers temperatures by 5–8°C on summer days, but it arrives later in Treeby than at the coast. This means the suburb can feel hotter until the breeze pushes inland around 2–4 pm.
Is Treeby prone to flooding?
Treeby’s sandy soils drain quickly, so flash flooding is rare. However, heavy winter rain can cause localised ponding on low-lying roads, particularly after several days of persistent rain.
For broader conditions across the state, see our Australia weather hub or the Perth Weather page. If severe storms are forecast, check Severe Weather Warning updates.