Cossack Weather Forecast

    • 27
    • 38

    Partly cloudy

    • 27
    • 40

    Sunny

    • 28
    • 41

    Mostly sunny

    • 28
    • 41

    Mostly sunny

    • 29
    • 39

    Possible storm

    • 28
    • 39

    Partly cloudy

    • 28
    • 40

    Possible shower or storm

Today 18 Dec Pilbara

Mostly sunny. Slight chance of a shower near the coast, near zero chance elsewhere. The chance of a thunderstorm in the southwest during this afternoon and early evening. Light winds becoming east to northeasterly 20 to 30 km/h in the morning then tending northwest to northeasterly in the evening. Daytime maximum temperatures 38 to 44.

Pilbara East Coastal Waters

Wallal to Cape Preston
Wind
Variable about 10 knots becoming east to southeasterly 10 to 15 knots in the early morning then turning north to northeasterly in the late morning. Winds reaching up to 20 knots inshore in the afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres inshore around midday.
1st Swell
Westerly below 1 metre.
Weather
Mostly sunny.
Weather Situation
A broad area of low pressure will persist and deepen over inland areas in the north this week and during the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cossack Temperature Statistics View More

December Temperature

Roebourne Airport (9km)

  • Lowest 3 December, 2025

    22.7 °C

  • Average December

    32.7 °C

  • Highest 9 December, 2025

    46.8 °C

Climate (2020–Present)

Roebourne Airport (9km)

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  • Average Low 2020–2025

    20.3 °C

  • Average 2020–2025

    27.1 °C

  • Average High 2020–2025

    35 °C
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