Cathedral Rocks Weather Forecast

    • 14
    • 17

    Cloudy

    • 14
    • 18

    Shower or two

    • 13
    • 18

    Cloud clearing

    • 13
    • 19

    Sunny

    • 14
    • 20

    Partly cloudy

    • 15
    • 18

    Shower or two

    • 12
    • 18

    Shower or two

Today 18 Aug Lower West

Partly cloudy. Slight chance of a shower in the south, near zero chance elsewhere. Winds west to southwesterly 15 to 20 km/h becoming light before dawn. Daytime maximum temperatures between 16 and 19.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 10 to 15 knots becoming variable below 10 knots in the early morning then becoming west to northwesterly 10 to 15 knots in the evening.
Seas
Around 1 metre.
1st Swell
West to southwesterly 2.5 to 4 metres.
Weather
Cloudy.
Weather Situation
A cold front has passed through the area, bringing a gusty westerly change. Winds will ease during the day as a weak ridge extends across the west coast. A weaker cold front will pass by to the south during Wednesday before another ridge settles over the southern part of the State on Thursday and Friday.
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

    15.4 °C

  • Highest 16 August, 2026

    23.2 °C

Climate (2021–2026)

Rottnest Island (5km)

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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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