Onslow Weather Forecast

    • 16
    • 29

    Sunny

    • 17
    • 30

    Sunny

    • 18
    • 30

    Sunny

    • 19
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    Partly cloudy

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    Mostly sunny

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    Sunny

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    Sunny

Today 31 Aug Pilbara

Sunny. Winds east to southeasterly 25 to 40 km/h. Daytime maximum temperatures 26 to 32.

Pilbara West Coastal Waters

Cape Preston to North West Cape
Wind
Easterly 10 to 15 knots, reaching up to 30 knots offshore during the morning. Winds becoming variable about 10 knots in the late afternoon.
Seas
1 to 2 metres, decreasing to 1 metre during the afternoon.
1st Swell
West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore west of Barrow Island around midday.
Weather
Sunny.
Weather Situation
A strong high pressure system over southern WA is slowly moving east and is directing fresh to strong and gusty southeasterly winds across much of the north. A weak trough will form along the west Pilbara coast by Monday as the high moves away, with winds easing and turning easterly. The trough will move inland on Wednesday ahead of a cold front moving through southern WA.
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  • Temperature Forecast Bureau of Meteorology

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Onslow Temperature Statistics View More

August Temperature

Onslow Airport (3km)

  • Lowest 2 August, 2025

    10.3 °C
  • Average August

    21.2 °C
  • Highest 15 August, 2025

    33.6 °C

Climate (2020–Present)

Onslow Airport (3km)

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  • Average Low 2020–2025

    20.5 °C
  • Average 2020–2025

    25.8 °C
  • Average High 2020–2025

    32.8 °C
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