Perth FAD1 (offshore) Weather Forecast

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Today 11 Jul Perth

Mostly sunny day. Medium chance of showers, most likely in the evening. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly 15 to 25 km/h in the late morning and early afternoon.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
North to northwesterly 20 to 30 knots becoming northwesterly in the early afternoon.
Seas
1.5 metres, increasing to 2 metres around midday.
1st Swell
Southwesterly 3 metres, increasing to 3 to 4 metres during the afternoon.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A high pressure system over southern WA will move into central Australia today. A moderate cold front will bring very windy conditions to the southwest and southern coastal waters today and Saturday. A new ridge will extend over southwest WA on Sunday, followed by a weak cold front brushing past the south coast on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD1 (offshore) Temperature Statistics View More

July Temperature

Rottnest Island (55km)

  • Lowest 8 July, 2025

    11.2 °C

  • Average July

    15.9 °C

  • Highest 6 July, 2025

    21.7 °C

Climate (2020–Present)

Rottnest Island (55km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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