Perth FAD4 (offshore) Weather Forecast

    • 19
    • 21

    Windy

    • 20
    • 22

    Sunny

    • 21
    • 21

    Windy

    • 19
    • 23

    Windy

    • 20
    • 25

    Windy

    • 23
    • 26

    Partly cloudy

    • 25
    • 25

    Partly cloudy

Today 9 Dec Lower West

Clear. Winds southwesterly 25 to 35 km/h turning southeasterly 20 to 30 km/h in the evening.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Southerly 15 to 25 knots increasing to 20 to 30 knots in the late afternoon then decreasing to 15 to 25 knots in the late evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the afternoon.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Sunny.
Weather Situation
A trough extending from the Gascoyne to the Goldfields will gradually move westwards across the South West Land Division to be located near the west coast by the weekend where it is expected to deepen. The trough will move offshore on Sunday as a high pressure system moves into the Bight and strengthens.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD4 (offshore) Temperature Statistics View More

December Temperature

Rottnest Island (43km)

  • Lowest 4 December, 2025

    16.7 °C

  • Average December

    20.3 °C

  • Highest 1 December, 2025

    36.2 °C

Climate (2020–Present)

Rottnest Island (43km)

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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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