Stack Island Weather Forecast

    • 20
    • 24

    Shower or two

    • 20
    • 24

    Showers. Storm developing

    • 18
    • 24

    Showers increasing

    • 18
    • 21

    Showers

    • 17
    • 23

    Showers

    • 18
    • 23

    Showers

    • 18
    • 22

    Shower or two

Today 14 Jan Illawarra

Partly cloudy. The chance of fog in the south early this morning. High chance of showers, most likely late this afternoon and evening. The chance of a thunderstorm during this afternoon and evening. Winds northeasterly 25 to 35 km/h. Daytime maximum temperatures in the mid to high 20s.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Northeasterly about 10 knots increasing to 15 to 20 knots in the morning. Winds reaching up to 25 knots south of Point Perpendicular in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday.
1st Swell
Southerly below 1 metre.
Weather
Mostly sunny. 50% chance of showers. The chance of a thunderstorm south of Port Kembla during this afternoon and evening.
Weather Situation
A weak ridge lies over the New South Wales coast, maintaining an onshore east to northeasterly airstream. Winds will increase fresh to strong on Thursday, before a trough enters the south coast and develops into a low pressure system on Friday, bringing fresh to strong southeasterly winds in its wake.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Stack Island Temperature Statistics View More

January Temperature

Kiama (Bombo Headland) (3km)

  • Lowest 2 January, 2026

    14.7 °C

  • Average January

    21.5 °C

  • Highest 10 January, 2026

    41 °C

Climate (2021–Present)

Kiama (Bombo Headland) (3km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    17.8 °C

  • Average High 2021–2026

    21.4 °C
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