Cathedral Rocks Weather Forecast

    • 12
    • 17

    Mostly sunny

    • 12
    • 17

    Mostly sunny

    • 12
    • 19

    Sunny

    • 13
    • 19

    Sunny

    • 13
    • 21

    Sunny

    • 16
    • 20

    Showers

    • 13
    • 18

    Shower or two

Today 12 Aug Lower West

Mostly sunny. The chance of morning fog inland. Areas of frost in the early morning. Light winds. Overnight temperatures falling to between 1 and 4 with daytime temperatures reaching around 18.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable about 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 2 to 3 metres, decreasing to 1.5 to 2 metres during the afternoon.
Weather
Mostly sunny.
Weather Situation
A ridge is moving in over the west coast and will gradually extend across southern WA over the next few days, dominating the weather pattern until the end of the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cathedral Rocks Temperature Statistics View More

August Temperature

Rottnest Island (5km)

  • Lowest 9 August, 2026

    7.4 °C

  • Average August

    14.6 °C

  • Highest 3 August, 2026

    20.4 °C

Climate (2021–2026)

Rottnest Island (5km)

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