Perth FAD1 (offshore) Weather Forecast

    • 21
    • 21

    Partly cloudy

    • 19
    • 20

    Shower

    • 17
    • 18

    Shower

    • 17
    • 18

    Cloudy

    • 17
    • 19

    Partly cloudy

    • 18
    • 19

    Shower

    • 17
    • 18

    Partly cloudy

Today 17 Sep Perth

Mostly sunny. Slight chance of a shower in the northeast this afternoon. Winds northeasterly 15 to 25 km/h shifting west to northwesterly in the middle of the day then becoming light in the evening.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Northeasterly 10 to 15 knots turning north to northwesterly in the early morning.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy.
Weather Situation
A trough extends down the west coast while a strong ridge moves east over the Bight. From Thursday, the trough will become mobile and move inland, ahead of a cold front crossing the southwest on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD1 (offshore) Temperature Statistics View More

September Temperature

Rottnest Island (55km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    16.3 °C

  • Highest 11 September, 2026

    23.3 °C

Climate (2021–2026)

Rottnest Island (55km)

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  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
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