Stack Island Weather Forecast

    • 16
    • 27

    Clear

    • 20
    • 24

    Shower or two

    • 13
    • 18

    Shower or two

    • 14
    • 19

    Shower or two

    • 16
    • 22

    Partly cloudy

    • 16
    • 24

    Sunny

    • 17
    • 25

    Shower or two

Today 20 Sep Illawarra

Clear. Winds westerly 20 to 30 km/h turning northwesterly in the evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Northerly 10 to 15 knots, reaching up to 20 knots offshore south of Point Perpendicular during the afternoon and evening. Winds turning northwesterly in the evening.
Seas
Around 1 metre.
1st Swell
Southerly 1 to 1.5 metres.
Weather
Clear.
Weather Situation
A high pressure system over the Tasman Sea today directs a northwesterly flow over the state, ahead of a fresh and gusty southerly change moving across the the coastal waters on Monday, reaching the QLD border by Tuesday. A second high pressure system is forecast to slip south and enter the Tasman Sea by mid-week, turning the winds east to northeasterly.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

September Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 18 September, 2026

    9.3 °C

  • Average September

    16.6 °C

  • Highest 5 September, 2026

    29.8 °C

Climate (2021–2026)

Kiama (Bombo Headland) (3km)

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  • Average Low 2021–2026

    14.9 °C

  • Average 2021–2026

    17.9 °C

  • Average High 2021–2026

    21.5 °C
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