Cossack Weather Forecast

    • 29
    • 45

    Possible storm

    • 28
    • 40

    Possible storm

    • 28
    • 42

    Possible storm

    • 28
    • 40

    Possible storm

    • 29
    • 41

    Mostly sunny

    • 30
    • 43

    Mostly sunny

    • 30
    • 43

    Mostly sunny

Today 21 Dec Pilbara

Mostly sunny. Slight chance of a shower in the northeast, most likely in the afternoon and evening. Near zero chance of rain elsewhere. The chance of a thunderstorm. Winds south to southeasterly 20 to 30 km/h tending northeast to southeasterly in the morning then tending northwest to northeasterly in the evening. Daytime maximum temperatures 40 to 46.

Pilbara East Coastal Waters

Wallal to Cape Preston
Wind
West to northwesterly 15 to 25 knots tending northwest to northeasterly 10 to 15 knots in the morning.
Seas
1 to 2 metres, decreasing to 1 metre during the morning.
1st Swell
Westerly below 1 metre.
Weather
Mostly sunny.
Weather Situation
A broad area of low pressure persists through inland areas. A ridge building to the south will bring a south to southeast wind change to southern Pilbara and southern parts of the North Interior over the weekend. Winds turning easterly early next week will push the inland trough closer to the coast.
Graph Plots Open in Graphs

  • 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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