Cathedral Rocks Weather Forecast

    • 13
    • 20

    Sunny day. Showers increasing

    • 15
    • 18

    Showers easing

    • 14
    • 18

    Possible shower

    • 14
    • 19

    Showers increasing

    • 14
    • 17

    Showers

    • 13
    • 17

    Showers easing. Wind easing

    • 12
    • 17

    Showers

Today 3 Aug Lower West

Mostly sunny. High chance of showers in the south, medium chance elsewhere. The chance of a thunderstorm near the coast late this afternoon and evening. Winds east to northeasterly 15 to 25 km/h shifting northwesterly 15 to 20 km/h in the early afternoon. Daytime maximum temperatures in the low to mid 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to northeasterly 10 to 15 knots shifting northwesterly 15 to 20 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
Weather
Mostly sunny. 90% chance of showers. The chance of a thunderstorm late this afternoon and evening.
Weather Situation
A trough will approach today, before moving east on Tuesday, followed by a cold front along the southwest coast. A weak ridge will briefly return on Wednesday, before weakening on Thursday ahead of the next cold front.
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 2 August, 2026

    10.4 °C

  • Average August

    13.3 °C

  • Highest 1 August, 2026

    16.7 °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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