South Island Weather Forecast

    • 24
    • 28

    Partly cloudy

    • 23
    • 27

    Partly cloudy

    • 22
    • 25

    Sunny

    • 22
    • 24

    Partly cloudy

    • 21
    • 24

    Partly cloudy

    • 20
    • 24

    Partly cloudy

    • 20
    • 24

    Partly cloudy

Today 25 Sep Pilbara

Partly cloudy. The chance of a thunderstorm in the southeast this afternoon. Winds southeast to southwesterly 15 to 20 km/h tending northwest to northeasterly in the middle of the day then tending northwest to southwesterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures 33 to 39.

Pilbara West Coastal Waters

Cape Preston to North West Cape
Wind
Southerly 10 to 15 knots, reaching up to 20 knots about offshore western waters early in the morning. Winds turning southwesterly in the middle of the day.
Seas
Around 1 metre.
1st Swell
West to southwesterly around 1 metre offshore, increasing to 1 to 1.5 metres during the afternoon.
Weather
Sunny.
Weather Situation
A weak inland trough and another trough forming over southwest Pilbara will maintain mainly southwest to northwest winds across the coastal waters. A ridge will arrive over west Pilbara waters later Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

South Island Temperature Statistics View More

September Temperature

Onslow Airport (31km)

  • Lowest 6 September, 2026

    15.3 °C

  • Average September

    24.5 °C

  • Highest 21 September, 2026

    37.4 °C

Climate (2021–2026)

Onslow Airport (31km)

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  • Average Low 2021–2026

    20.5 °C

  • Average 2021–2026

    25.8 °C

  • Average High 2021–2026

    32.8 °C
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