South West Island Weather Forecast

    • 11
    • 30

    Sunny

    • 13
    • 30

    Partly cloudy

    • 17
    • 30

    Partly cloudy

    • 18
    • 31

    Partly cloudy

    • 18
    • 30

    Partly cloudy

    • 17
    • 31

    Partly cloudy

    • 17
    • 30

    Sunny

Today 3 Sep Kakadu National Park

Sunny. Light winds.

Roper Groote Coast

Cape Arnhem to QLD-NT Border
Wind
East to southeasterly 10 to 15 knots tending south to southeasterly before dawn then tending east to southeasterly in the middle of the day. Winds reaching up to 20 knots offshore south of Numbulwar in the late morning.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning.
1st Swell
East to southeasterly below 1 metre.
Weather
Sunny.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

South West Island Temperature Statistics View More

September Temperature

Centre Island (16km)

  • Lowest 2 September, 2025

    19.5 °C

  • Average September

    22.3 °C

  • Highest 1 September, 2025

    26.7 °C

Climate (2020–Present)

Centre Island (16km)

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  • Average Low 2020–2025

    24.5 °C

  • Average 2020–2025

    27.4 °C

  • Average High 2020–2025

    31.6 °C
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