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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Watch Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Bertram’s weather today is shaped by its position 10 kilometres inland from Cockburn Sound, meaning the live forecast above will show a slightly drier and warmer daytime than coastal Rockingham, with a persistent afternoon sea breeze that often makes afternoon wind in Bertram the main feature.
How does Bertram’s location affect its weather?
Bertram lies on the Swan Coastal Plain about 30 kilometres south‑west of the Perth CBD. The suburb sits far enough from the ocean that mornings can be a couple of degrees cooler than Perth city, but the afternoon sea breeze from the Indian Ocean arrives later and stronger here. This breeze, funnelled across the flat plain, can push wind gusts up to 30–40 kilometres per hour in summer afternoons, then drop away after sunset. For the latest Perth weather patterns, keep an eye on the regional synoptic charts.
What makes Bertram different from Rockingham weather?
Rockingham sits right on the coast, so its daily maximum is often moderated by the ocean. Bertram, being a few kilometres inland, can be 1–2 °C warmer on calm mornings. However, both suburbs share the same sea‑breeze pattern – just arriving about 15–20 minutes later in Bertram. If you’re heading to the beach, check Rockingham weather separately, as cloud and fog can hug the coast more persistently than inland.
Does Bertram get very windy every day?
Not every day, but from October to April a sea breeze is common by mid‑afternoon. The wind tends to be strongest when a trough sits near the coast and a strong high is in the Bight. Check the live forecast above for wind speed trends.
Should I expect rain in Bertram when Perth is wet?
Roughly yes. Bertram sits in the same rain‑shadow zone as most of the coastal plain. Cold fronts from the west often produce similar totals to Perth’s western suburbs, but the Darling Scarp to the east can enhance showers slightly.
Is Bertram foggy in winter?
Yes. On calm winter mornings, radiation fog can form over the flat plain, reducing visibility below 200 metres until about 9 am. It usually clears within an hour of sunrise as the sea breeze develops.