The Basin Weather Forecast

    • 14
    • 18

    Partly cloudy

    • 14
    • 18

    Partly cloudy

    • 14
    • 18

    Showers increasing

    • 14
    • 17

    Showers. Becoming windy

    • 12
    • 16

    Showers. Very windy

    • 12
    • 17

    Showers

    • 13
    • 17

    Showers. Windy

Today 4 Aug Lower West

Partly cloudy. Medium chance of showers, becoming less likely in the afternoon. Winds west to southwesterly 15 to 20 km/h becoming light in the late afternoon. Daytime maximum temperatures between 16 and 20.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to southwesterly 10 to 15 knots decreasing to about 10 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
West to southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A trough lies inland of the west coast and is expected to continue 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.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Basin Temperature Statistics View More

August Temperature

Rottnest Island (3km)

  • Lowest 2 August, 2026

    10.4 °C

  • Average August

    14.3 °C

  • Highest 1 August, 2026

    16.7 °C

Climate (2021–2026)

Rottnest Island (3km)

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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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