Avalon Weather Forecast

    • 16
    • 22

    Showers increasing

    • 15
    • 19

    Showers easing. Wind easing

    • 15
    • 20

    Shower or two

    • 13
    • 20

    Mostly sunny

    • 13
    • 21

    Possible shower

    • 13
    • 20

    Mostly sunny

    • 12
    • 20

    Mostly sunny

Today 18 Sep Mandurah

Partly cloudy. Very high chance of showers, most likely in the afternoon and evening. Winds northeasterly 15 to 20 km/h tending northerly 20 to 30 km/h in the morning then tending northwesterly 25 to 40 km/h in the early afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
North to northeasterly 10 to 15 knots turning west to northwesterly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
West to southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm in the evening.
Weather Situation
A trough extends down the west coast. The trough will move inland today ahead of a cold front which will pass over the local waters, before the next ridge begins to develop Saturday.
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  • Temperature Forecast Bureau of Meteorology

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Avalon Temperature Statistics View More

September Temperature

Mandurah (10km)

  • Lowest 1 September, 2026

    10.4 °C

  • Average September

    16.9 °C

  • Highest 16 September, 2026

    26.9 °C

Climate (2021–2026)

Mandurah (10km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    19.1 °C

  • Average High 2021–2026

    23.8 °C
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