Stack Island Weather Forecast

    • 19
    • 28

    Shower or two

    • 13
    • 18

    Shower or two

    • 14
    • 20

    Showers easing

    • 16
    • 22

    Partly cloudy

    • 16
    • 24

    Sunny

    • 17
    • 26

    Mostly sunny

    • 15
    • 20

    Possible shower

Today 21 Sep Illawarra

Cloudy. High chance of showers, becoming less likely later tonight. The chance of a thunderstorm in the north early this evening. Winds south to southeasterly 25 to 35 km/h decreasing to 15 to 25 km/h in the late evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southerly 20 to 25 knots, reaching up to 30 knots in the late afternoon.
Seas
2 to 2.5 metres.
1st Swell
Southerly 2 to 3 metres.
Weather
Cloudy.
Weather Situation
A fresh and gusty southerly change over the central coastal waters will reach the QLD by Tuesday morning. A high pressure system is forecast to slip south and enter the Tasman Sea by mid-week, turning the winds east to northeasterly from Wednesday and freshen along the southern and central coastal waters.
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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

    16.9 °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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