Perth FAD5 (offshore) Weather Forecast

    • 18
    • 19

    Rain

    • 16
    • 18

    Shower

    • 14
    • 19

    Windy

    • 15
    • 20

    Partly cloudy

    • 17
    • 19

    Partly cloudy

    • 18
    • 19

    Shower

    • 16
    • 17

    Shower

Today 26 Aug Lower West

Cloudy. Very high chance of rain. The chance of a thunderstorm in the afternoon, possibly severe with heavy rain which may lead to flash flooding in the south. Winds west to northwesterly 15 to 25 km/h tending southeast to southwesterly 15 to 20 km/h in the late evening.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Southerly 15 to 25 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm.
Weather Situation
A high pressure ridge over southeastern WA is moving east. A slow-moving cold front and trough will reach the west coast on Wednesday, continuing eastward on Thursday as a low pressure centre develops in the trough near the south coast. In the wake of the front and trough, a new ridge will strengthen across the west coast from Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD5 (offshore) Temperature Statistics View More

August Temperature

Rottnest Island (37km)

  • Lowest 9 August, 2026

    7.4 °C

  • Average August

    15.5 °C

  • Highest 16 August, 2026

    23.2 °C

Climate (2021–2026)

Rottnest Island (37km)

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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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