Armstrong Rock Weather Forecast

    • 11
    • 19

    Becoming windy. Sunny

    • 11
    • 18

    Becoming windy. Sunny

    • 11
    • 18

    Partly cloudy

    • 13
    • 19

    Mostly sunny

    • 13
    • 19

    Becoming windy. Sunny

    • 12
    • 20

    Windy. Partly cloudy

    • 10
    • 20

    Wind easing. Sunny

Today 19 Sep Lower West

Mostly sunny. The chance of smoke haze in the morning and early afternoon. Winds east to southeasterly 15 to 25 km/h tending south to southeasterly 20 to 30 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
Southeasterly 10 to 15 knots tending southerly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1.5 to 2 metres during the afternoon.
1st Swell
Southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to around 1 metre around midday.
Weather
Sunny.
Weather Situation
A weak cold front is brushing past the south coast today, followed by a high pressure ridge rapidly developing along the south coast during today and tomorrow. A weak west coast trough will form by Friday, move inland and deepen gradually later in the weekend ahead of another weak cold front brushing past the south coast.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Armstrong Rock Temperature Statistics View More

September Temperature

Rottnest Island (1km)

  • Lowest 6 September, 2024

    10 °C

  • Average September

    16.8 °C

  • Highest 12 September, 2024

    25.6 °C

Climate (2019–Present)

Rottnest Island (1km)

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  • Average Low 2019–2024

    16 °C

  • Average 2019–2024

    18.9 °C

  • Average High 2019–2024

    22.8 °C
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