Cathedral Rocks Weather Forecast

    • 17
    • 26

    Sunny

    • 20
    • 27

    Sunny

    • 21
    • 27

    Mostly sunny

    • 20
    • 26

    Mostly sunny

    • 19
    • 26

    Sunny

    • 20
    • 25

    Mostly sunny

    • 20
    • 25

    Sunny

Today 30 Dec Lower West

Sunny. Winds easterly 25 to 40 km/h decreasing to 20 to 30 km/h in the morning then turning southeasterly in the early afternoon. Daytime maximum temperatures in the low 30s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southwesterly 15 to 20 knots turning southeasterly 10 to 15 knots in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A ridge sits along the south coast, driving a easterly airstream over the local waters. A trough developing down the west coast moves inland on Thursday or Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cathedral Rocks Temperature Statistics View More

December Temperature

Rottnest Island (5km)

  • Lowest 21 December, 2025

    14.6 °C

  • Average December

    21.5 °C

  • Highest 25 December, 2025

    40.9 °C

Climate (2020–Present)

Rottnest Island (5km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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