Perth FAD4 (offshore) Weather Forecast

    • 17
    • 21

    Sunny

    • 19
    • 22

    Partly cloudy

    • 20
    • 21

    Partly cloudy

    • 19
    • 20

    Shower

    • 17
    • 18

    Shower

    • 17
    • 18

    Cloudy

    • 17
    • 19

    Partly cloudy

Today 15 Sep Lower West

Mostly sunny. The chance of a thunderstorm in the north in the morning and afternoon. Winds easterly 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
East to southeasterly 15 to 20 knots tending south to southeasterly in the middle of the day then tending east to southeasterly in the evening.
Seas
1 to 1.5 metres.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Sunny.
Weather Situation
A trough sits over the Goldfields and Gascoyne as a high strengthens in the Bight. The trough will reach the west coast on Tuesday, before moving back inland later Thursday ahead of another cold front that will reach the southwest coast by Friday morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD4 (offshore) Temperature Statistics View More

September Temperature

Rottnest Island (43km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    16 °C

  • Highest 11 September, 2026

    23.3 °C

Climate (2021–2026)

Rottnest Island (43km)

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

  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
Get WillyWeather+ to remove ads