Perth FAD4 (offshore) Weather Forecast

    • 20
    • 21

    Windy

    • 18
    • 23

    Windy

    • 20
    • 21

    Windy

    • 19
    • 22

    Windy

    • 18
    • 21

    Windy

    • 19
    • 23

    Windy

    • 20
    • 24

    Sunny

Today 17 Dec Lower West

Partly cloudy. Winds southwesterly 20 to 30 km/h. Daytime maximum temperatures in the mid to high 20s.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Southwesterly 15 to 20 knots turning southerly 15 to 25 knots in the middle of the day.
Seas
Below 1 metre, increasing to 1 to 2 metres during the morning.
1st Swell
Southwesterly 1.5 metres, increasing to 2 to 3 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A deep trough lies inland of the west coast and will move east across the South West Land Division ahead of a weak cold front brushing the south coast. A ridge extends across the southwest coast will extend along southern WA on Thursday. A new west coast trough will form on Friday.
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

    21.6 °C

  • Highest 14 December, 2025

    37.1 °C

Climate (2020–Present)

Rottnest Island (43km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
Get WillyWeather+ to remove ads