Flat Island Weather Forecast

    • 20
    • 23

    Clear

    • 21
    • 22

    Partly cloudy

    • 20
    • 22

    Partly cloudy

    • 17
    • 23

    Sunny

    • 18
    • 24

    Sunny

    • 20
    • 24

    Sunny

    • 21
    • 24

    Sunny

Today 4 Sep Pilbara

Mostly sunny. Light winds becoming northwest to southwesterly 15 to 25 km/h during the morning. Overnight temperatures falling to between 14 and 19 with daytime temperatures reaching 29 to 35.

Pilbara West Coastal Waters

Cape Preston to North West Cape
Wind
South to southwesterly 10 to 15 knots tending west to southwesterly during the afternoon.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres about offshore western waters.
Weather
Mostly sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Flat Island Temperature Statistics View More

September Temperature

Thevenard Island (44km)

  • Lowest 2 September, 2025

    17.9 °C

  • Average September

    22.5 °C

  • Highest 2 September, 2025

    29.1 °C

Climate (2020–Present)

Thevenard Island (44km)

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  • Average Low 2020–2025

    22.4 °C

  • Average 2020–2025

    25.8 °C

  • Average High 2020–2025

    30.3 °C
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