Perth FAD5 (offshore) Weather Forecast

    • 16
    • 17

    Cloudy

    • 16
    • 18

    Cloudy

    • 16
    • 18

    Partly cloudy

    • 16
    • 19

    Sunny

    • 16
    • 20

    Sunny

    • 19
    • 21

    Sunny

    • 20
    • 21

    Sunny

Today 18 Sep Lower West

Partly cloudy. Patchy fog in the north early this morning. Slight chance of a shower in the morning and early afternoon. Light winds becoming southwesterly 15 to 25 km/h in the morning then becoming light in the evening. Daytime maximum temperatures between 16 and 19.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Southwesterly 10 to 15 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 3 metres, increasing to 3 to 4 metres around midday.
Weather
Partly cloudy.
Weather Situation
A series of weak fronts brush the far south until Friday. A ridge of high pressure is developing about the central west coast, and slips south on Friday and will dominate the weather pattern into next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD5 (offshore) Temperature Statistics View More

September Temperature

Rottnest Island (37km)

  • Lowest 8 September, 2025

    8.2 °C

  • Average September

    15 °C

  • Highest 12 September, 2025

    22.4 °C

Climate (2020–Present)

Rottnest Island (37km)

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  • Average Low 2020–2025

    16 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    22.8 °C
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