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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Focus Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Mariginiup’s weather this hour matches the live forecast above, reflecting the typical pattern for Perth’s northern suburbs — hot dry summers, mild wet winters, and a strong afternoon sea breeze.
What is the typical climate in Mariginiup?
Mariginiup experiences a Mediterranean climate with distinct seasonal shifts. Summer (December–February) brings dry heat often above 30 °C, while winter (June–August) delivers cool, cloudy days and most of the annual rainfall.
- Summer average maximum: around 31 °C in January, with occasional heatwaves exceeding 40 °C.
- Winter average maximum: about 18 °C in July, with overnight lows near 8 °C.
- Annual rainfall roughly 700 mm, concentrated between May and September.
- The “Fremantle Doctor” sea breeze arrives most summer afternoons, dropping temperatures by 5–10 °C.
- Thunderstorms are rare but can occur during winter frontal systems.
How does Mariginiup’s weather compare to central Perth?
Being slightly inland and at a higher elevation (around 60 m above sea level), Mariginiup can be a degree or two hotter on summer days and a touch cooler overnight in winter compared to the Perth CBD.
- Summer daytime temperatures often peak 1–2 °C higher than Perth Airport’s recorded data.
- Frost is uncommon but not impossible on calm winter mornings when skies are clear.
- The suburb’s position near the Wanneroo region means it can catch easterly winds earlier in the day before the sea breeze arrives.
Does Mariginiup get thunderstorms often?
No. Thunderstorms are infrequent — typically fewer than 10 days per year. Most occur in winter when cold fronts sweep across, bringing brief heavy rain and isolated lightning. Summer storms are very rare due to the stable high-pressure systems.
When is the hottest month in Mariginiup?
January is the hottest month, with average daily highs near 31 °C. Heatwaves can push temperatures above 40 °C for two or three consecutive days, usually when a northeasterly wind blocks the sea breeze.
How does the sea breeze affect Mariginiup?
The afternoon sea breeze, locally called the “Fremantle Doctor”, usually reaches Mariginiup by mid-afternoon in summer. It drops temperatures by 5–10 °C and brings relief from the heat, but can also increase fire danger ratings when preceding easterly winds are strong.
For current conditions across WA, visit our Australia weather hub or the Perth weather page. If a severe weather event is forecast, check the severe weather warning page.