Stack Island Weather Forecast

    • 13
    • 19

    Mostly sunny

    • 12
    • 18

    Sunny

    • 11
    • 18

    Showers easing

    • 15
    • 19

    Partly cloudy

    • 13
    • 18

    Partly cloudy

    • 12
    • 17

    Mostly sunny

    • 12
    • 19

    Mostly sunny

Today 31 May Illawarra

Mostly sunny. Winds westerly 20 to 30 km/h. Overnight temperatures falling to between 7 and 12 with daytime temperatures reaching between 13 and 19.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
West to southwesterly 15 to 20 knots, reaching up to 25 knots offshore south of Port Kembla in the late morning.
Seas
1 to 1.5 metres.
1st Swell
Southerly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A ridge is building in the northwest in the wake of a weak cold front that is slipping south of the State early today. Later today, another stronger cold front is forecast to enter southwest New South Wales, then cross the state during Tuesday into Wednesday morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

May Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 8 May, 2026

    10.1 °C

  • Average May

    17.4 °C

  • Highest 2 May, 2026

    23.4 °C

Climate (2021–Present)

Kiama (Bombo Headland) (3km)

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  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    17.9 °C

  • Average High 2021–2026

    21.5 °C
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